Dissertations / Theses on the topic 'Genetic markers'
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Bitalo, Daphne Nyachaki. "Implementation of molecular markers for triticale cultivar identification and marker-assisted selection." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71670.
Full textTriticale is an amphidiploid that consists of wheat (A and B) and rye (R) genomes. This cereal is fast becoming important on a commercial basis and warrants further assessment for the better management and breeding of the hybrid. The assessment of the genetic diversity among the wheat and rye genomes within triticale can be obtained by using molecular markers developed in both donor genomes. Simple sequence repeats markers (SSRs) and amplified fragment length markers (AFLPs) have been previously used to assess the genetic diversity among triticale lines. SSRs are highly polymorphic markers that are abundant and which have been shown to be highly transferable between species in previous studies while AFLP markers are known to generate plenty of data as they cover so many loci. Thus, the aim of this study was to develop a marker system suitable to assess the genetic diversity and relationships of advanced breeding material (and cultivars) of the Stellenbosch University’s Plant Breeding Laboratory (SU-PBL). Therefore, both AFLP and SSR markers were initially analysed using eight triticale cultivars (with known pedigrees) to facilitate cultivar identification. Fourty-two AFLP primer combinations and 86 SSR markers were used to assess the genetic diversity among the Elite triticale cultivars. The AFLP primer combinations generated under average polymorphism information content (PIC) values. Furthermore, these markers generated neighbour-joining (NJ) and unweighted pair group method with arithmetic average (UPGMA) dendograms that displayed relationships that did not correspond with the available pedigree information. Therefore, this marker system was found not to be suitable. A set of 86 SSRs previously identified in both wheat and rye, was used to test the genetic diversity among the eight cultivars. The markers developed in wheat achieved 84% transferability while those developed in rye achieved 79.3% transferability. A subset of SSR markers was able to distinguish the cultivars, and correctly identify them by generating NJ and UPGMA dendograms that exhibited relationships that corroborated the available pedigree data. This panel of markers was therefore chosen as the most suitable for the assessment of the advanced breeding material. The panel of seven SSR markers was optimised for semi-automated analysis and was used to screen and detect the genetic diversity among 306 triticale entries in the F6, Senior and Elite phases of the SU-PBL triticale breeding programme. An average PIC value of 0.65 was detected and moderate genetic variation was observed. NJ and UPGMA dendograms generated showed no clear groupings. However, the panel of markers managed to accurately identify all cultivars within the breeding program. The marker panel developed in this study is being used to routinely distinguish among the advanced breeding material within the SU-PBL triticale breeding programme and as a tool in molecular-assisted backcross.
Rantapää, Dahlqvist Solbritt. "Genetic markers in rheumatoid arthritis." Doctoral thesis, Umeå universitet, Reumatologi, 1985. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-101305.
Full textDiss. (sammanfattning) Umeå : Umeå universitet, 1985, härtill 6 uppsatser.
digitalisering@umu
Baldwin, Samantha, and n/a. "Models for genetic analysis of polyploid plant species." University of Otago. Department of Biochemistry, 2008. http://adt.otago.ac.nz./public/adt-NZDU20090826.092431.
Full textValdman, Alexander. "Molecular genetic markers of prostate cancer development /." Stockholm, 2003. http://diss.kib.ki.se/2003/91-7349-618-9/.
Full textManganaris, Athanasios Georgiou. "Isoenzymes as genetic markers in apple breeding." Thesis, Imperial College London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389070.
Full textUsha, A. P. "Microsatellite markers in genetic improvement of livestock." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/11490.
Full textJohns, Neil. "Phenotypes and genetic markers of cancer cachexia." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/23392.
Full textGunn, Melissa Rose School of Biological Earth & Environmental Science UNSW. "The use of microsatellites as a surrogate for quantitative trait variation in conservation." Awarded by:University of New South Wales. School of Biological, Earth and Environmental Science, 2003. http://handle.unsw.edu.au/1959.4/22457.
Full textAppleyard, Sharon Anne. "The application of genetic markers to Fijian Tilapia stock improvement." Thesis, Queensland University of Technology, 1998.
Find full textBadenhorst, Daleen. "Development of AFLP markers for Haliotis midae for linkage mapping." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/21525.
Full textENGLISH ABSTRACT: Haliotis midae, is the only commercially important species of the six abalone species found in South African coastal waters and has become a lucrative commercial commodity. Wild stocks of H. midae are, however, no longer commercially sustainable due to a combination of environmental factors and poaching. The solution to the crisis is artificial production systems in the form of abalone farms. An abalone enhancement programme was initiated in South Africa in 2006, funded by industry and government. This programme focuses on the elucidation of the abalone genome and genetic factors contributing to increased productivity, thereby aiding the commercial production of abalone. The aims of this study, the first of its kind concerning H. midae, were to develop AFLPbased markers (specifically fluorescent AFLP analysis); to monitor the segregation of these markers in a single full-sib family and to use the markers and additional microsatellite markers to generate the first preliminary linkage map for H. midae. Genomic DNA of sufficient quality and purity for fluorescent AFLP analysis was obtained from 3.5-month-old H. midae juveniles. Preliminary linkage maps were constructed using AFLP and microsatellite markers segregating in an F1 family following a pseudo-testcross mapping strategy. Twelve AFLP primer combinations, producing 573 segregating peaks, and 10 microsatellite markers were genotyped in the parents and 108 progeny of the mapping family. Of the 573 segregating AFLP peaks genotyped, 241 segregated in a 1:1 ratio and 332 in a 3:1 ratio. Of these AFLP markers, 90 segregated according to the expected 1:1 Mendelian ratio and 164 segregated according to the expected 3:1 Mendelian ratio at the P = 0.05 level and were used for linkage analysis. Of the 10 microsatellite markers genotyped, nine were informative for linkage mapping analysis. Preliminary male and female genetic linkage maps were developed using markers segregating in the female or male parent. A total of 12 and 10 linkage groups were detected for the female and male maps respectively. The female map covered 1473.5cM and consisted of 56 markers, and the male map covered 738.9cM consisting of 30 markers. Markers with segregation distortion were observed as previously reported in other abalone species and potential homology between one of the linkage groups of the male map and two of the linkage groups of the female map were identified using the 3:1 segregating AFLP markers. In conclusion, the genetic linkage map presented here, despite the fact that it has relatively low genome coverage and low marker density, forms an ideal starting point for more detailed study of the H. midae genome and will provide a scaffold for basic and applied studies in abalone. A high-density linkage map of H. midae should in future be developed with additional co-dominant molecular markers, such as microsatellites, to improve the transferability of the linkage map between different laboratories and among populations. A high-density linkage map will facilitate the mapping of QTL of commercially important traits (i.e. growth) and future MAS breeding programmes.
AFRIKAANSE OPSOMMING: Perlemoenspesie, Haliotis midae, is die enigste spesie van kommersiële belang van die ses wat in die kuswater van Suid-Afrika aangetref word en het ‘n winsgewende handelskommoditeit in Suid-Afrika geword. Die ontginning van natuurlike H. midae populasies is egter, as gevolg van ‘n kombinasie van omgewingsfaktore en stropery nie meer kommersieel volhoubaar nie. Die perlemoenkrisis kan die hoof gebied word deur kunsmatige produksiesisteme op perlemoenplase tot stand te bring. ‘n Perlemoen verbeteringsprogram is in 2006 in Suid-Afrika geïnisieer en word deur die industrie en regering befonds. Die program focus op die ontrafeling van die perlemoen genoom en die genetiese faktore wat bydrae tot verhoogde produksie. Sodanige inligting kan gebruik word om kommersiële perlemoenproduksie te bevorder. Die doel van hierdie studie, die eerste met H. midae, is om AFLP-gebaseerde merkers (spesifiek fluoresserende AFLP analise) te ontwikkel; die segregasie van hierdie merkers te monitor in ‘n enkel volledige verwante familie en die merkers en addisionele mikrosatelliet merkers te gebruik om die eerste voorlopige koppelingskaart vir H. midae te genereer. Genomiese DNS van genoegsame kwaliteit en suiwerheid vir fluoresserende AFLP analise is ge-ekstraeer uit 3.5-maand-oue H. midae individue. Voorlopige koppelingskaart is gekonstrueer deur van segregerende AFLP en mikrosatelliet merkers in ‘n F1 familie gebruik te maak deur ‘n pseudo-kruistoets karteringstrategie te volg. Twaalf AFLP inleier kombinasies, wat 573 segregerende fragmente geproduseer het, en 10 mikrosatelliet merkers is gegenotipeer in die ouers en 108 individue van die nageslag van die karteringsfamilie. Van die 573 segregerende AFLP merkers wat gegenotipeer is, het 241 in ‘n 1:1 verhouding en 332 in ‘n 3:1 verhouding gesegregeer. Van hierdie AFLP merkers, het 90 volgens die verwagte 1:1 Mendeliese verhouding en 164 volgens die 3:1 Mendeliese verhouding by die P = 0.05 gesegregeer vlak en is vir die koppelingsanalise gebruik. Van die 10 mikrosatelliet merkers gegenotipeer, was 9 informatief vir koppeling karteringsanalise. Voorlopige manlike en vroulike genetiese koppelingskaarte is ontwikkel met gebruik te maak van merkers wat in die manlike of vroulike ouer segregeer het. ‘n Totaal van 12 en 10 koppelingsgroepe is onderskeidelik in die vroulike en manlike karate gegenereer. Die vroulike kaart dek 1473.5cM and bestaan uit 56 merkers, terwyl die manlike kaart 738.9cM beslaan het met 30 merkers. Merkers wat segregasie distorsie toon is waargeneem soos voorheen in ander perlemoenspesies gerapporteer. Potensiële ooreenstemming tussen een van die koppelingsgroepe van die manlike kaart en twee van die koppelingsgroepe van die vroulike kaart is aangetoon deur van die 3:1 segregerende AFLP merkers gebruik te maak. Die genetiese koppelingskaarte verskaf wel ‘n relatiewe lae genoomdekking en ‘n lae merkerdigtheid, maar is ‘n ideale vertrekpunt vir meer gedetailleerde studie van die H. midae genoom en dien as ‘n raamwerk vir toekomstige basiese en toegepaste studies in perlemoennavorsing. ‘n Hoëdigtheid koppelingskaart van H. midae moet in die toekoms ontwikkel word met gebruik van bykomstige ko-dominante molekulêre merkers, soos mikrosatelliete. Dit sal die oordraagbaarheid van die koppelingskaart tussen verskillende laboratoria asook tussen populasies verbeter. ‘n Hoëdigtheid koppelingskaart sal die kartering van kwantitatiewe kenmerk loki (KKL) vir kommersieel belangrike kenmerke (onder andere groeikrag) en toekomstige merker bemiddelde seleksie (MBS) teelprogramme moontlik maak.
Butterfield, Michael Keith. "Marker assisted breeding in sugarcane : a complex polyploid." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019.1/1203.
Full textCarter, Deidre Anne. "DNA polymorphisms as genetic markers in Phytophthora infestans." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46699.
Full textSarela, Abeezar Ismail. "Molecular genetic markers of prognosis in colorectal carcinoma." Thesis, University of Leeds, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438485.
Full textDudley, Roy. "Genetic mapping of Armillaria ostoyae using RAPD markers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0004/MQ44087.pdf.
Full textDudley, Roy 1972. "Genetic mapping of Armillaria ostoyae using RAPD markers." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20796.
Full textWhiteside, Michael C. R. "Genetic markers for prognostic prediction in colorectal cancer." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387972.
Full textWynne, Ian R. "Population studies on farmland insects using genetic markers." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387677.
Full textMcGinley, Susan, and Kingdon Lorraine. "Improving Dairy Bull Selection: Genetic Markers Reduce Guesswork." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2000. http://hdl.handle.net/10150/622278.
Full textKennedy, Amy. "Genetic Markers, Birth Characteristics, and Childhood Leukemia Risk." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/992.
Full textSUSCA, Roberta Rosa. "Patterns of genetic and linguistic variation. A study of uniparental markers." Doctoral thesis, Università degli studi di Ferrara, 2017. http://hdl.handle.net/11392/2488149.
Full textQuesta tesi riassume l’attività di ricerca da me svolta durante i tre anni di dottorato, sovvenzionato dal progetto ERC LanGeLin, il cui scopo principale è di migliorare le conoscenze sulla co-evoluzione di lingue e geni. I progetti descritti condividono l’uso di marcatori uniparentali usati per gli studi di evoluzione umana, ma differiscono per la combinazione di metodi molecolari e statistici. La Parte I descrive lo stato dell’arte dei marcatori uniparentali e i pro e contro del loro utilizzo in ambito linguistico e archeologico. La Parte II riassume i risultati delle ricerche condotte nell’ambito del progetto LanGeLin che descrive la diversità dei pattern genetici e linguistici in 36 popolazioni Euroasiatiche. Il progetto LanGeLin (Language and Gene Lineages), finanziato dal “European Research Council” ha lo scopo di testare l’ipotesi di Darwin presentata in “Origine delle specie”. Darwin intuì che l’albero filogenetico delle diverse sottospecie umane, potesse sovrapporsi a quello ottenuto a partire dalle diverse lingue, offrendo di fatto la possibilità di studiare la genealogia delle lingue e allo stesso tempo capire come le differenze tra queste avrebbero permesso di far luce sugli aspetti elusivi della storia demografica umana. R. Sokal e L.L. Cavalli-Sforza nel 1988 hanno elucidato come la comparazione dei vocaboli rifletta la correlazione fra variabilità genetica e linguistica nelle maggiori famiglie linguistiche ma, a causa di metodi linguistici, risulta difficile comparare popolazioni derivanti da gruppi linguistici distanti. Il nuovo metodo linguistico PCM si basa sulle caratteristiche linguistiche più stabili della sintassi. È stato dunque possibile, anche in questa tesi, testare su larga scala geo-linguistica la correlazione tra dati genetici e linguistici. Lo studio delle discendenze materne e paterne è stato condotto separatamente per indagarne le relative storie di migrazione: due differenti storie sono emerse dall’analisi del Ychr (discendenza patrilineare) e del mtDNA (discendenza matrilineare). Non ovvie considerazioni sono scaturite dalla comparazione delle caratteristiche genetiche e linguistiche, che ha portato a definire come la correlazione tra lingue e sequenza genetica sia dipendente dall’area geografica e dai marcatori genetici considerati. La Parte III descrive l’analisi di sequenze di mtDNA del Mesolitico (Ms) che ci ha permesso di indagare sul popolamento della Sardegna in periodo Neolitico (Ne) e pre-Neolitico (pN). Lo studio è stato incentrato su due sequenze mitocondriali sarde Ms in relazione al contesto europeo. C’è ancora molta incertezza sulla variabilità genetica della Sardegna preistorica, a causa della scarsità di resti umani Ne. Dal punto di vista genetico, i sardi moderni possono considerarsi un gruppo a se stante rispetto al resto dell’Europa continentale, mostrando alti livelli di diversità interna e una forte vicinanza con i primi coltivatori europei del Ne. Questa tesi riporta le due prime sequenze mtDNA complete sarde, datate circa 10000 anni fa. I due individui confermano un’occupazione mesolitica dell’isola e rappresentano un aplotipo mai trovato prima in Sardegna mesolitica e con basse frequenze nell’intera Europa. Le due sequenze risultano ben differenziate se comparate con altri dati europei pN, e più simili a popolazioni dell’era pre-glaciale che a popolazioni coeve. Analisi di inferenza Bayesiana hanno mostrato come i primi abitanti dell’isola abbiano contribuito poco al popolamento attuale dell’isola, la cui diversità genetica deriva da migrazioni dal continente in tempi neolitici. Un progetto portato avanti parallelamente, ha riguardato lo studio di frequenze alleliche in gemelli dizigotici provenienti da popolazioni umane africane, europee ed asiatiche. Le tecniche bioinformatiche e biostatistiche usate per le analisi genomiche su larga scala, fanno da collante con i precedenti progetti descritti.
Wilson, James F. "Human population structure and demographic history using genetic markers." Thesis, University of Oxford, 2002. http://ora.ox.ac.uk/objects/uuid:5a4844ff-9347-44b5-999e-64ce5025006f.
Full textMote, Benny Edd. "The use of genetic markers to improve sow productive life and genetic abnormalities." [Ames, Iowa : Iowa State University], 2008.
Find full textVan, Staden Derick. "AFLP and PCR markers for the Ht1, Ht2, Ht3 and Htn1 resistance genes in maize." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52078.
Full textENGLISH ABSTRACT: Maize is undoubtedly South Africa's most important field crop. The identification of markers and genes for traits of interest is important to sustain the improvement of maize cultivation. Northern corn leaf blight (NClB) is a disease that occurs worldwide and can dramatically reduce yield. A number of single dominant resistance genes have been identified for NClB and some have been mapped. Currently there are no simple PCR markers for any of these resistance genes, making markerassisted selection (MAS) difficult. The aim of this study was to develop PCR markers for the NClB resistance genes Ht1, Ht2, Ht3 and Htn1 in maize. To accomplish this, the AFlP (amplified fragment length polymorphism) technique was first optimised. The results indicated that the Mlul/Msel restriction enzyme combination produces a higher percentage of polymorph isms when compared to the PstllMsel enzyme combination. It was also shown that the enzyme combination plays an important role in the percentage of polymorphic fragments observed, whereas the number of restriction enzymes used in AFlP analysis only significantly affects the total number of fragments scored. Populations segregating for the different resistance genes were not available for this study. Nearly-isogenic lines (Nils) were used in combination with AFlP technology to identify markers that map close to the genes. AFlP markers common in at least two resistant or susceptible lines were cloned and converted to PCR markers. Two commercially available recombinant inbred line (Ril) populations were then used to map the identified markers. For Htn1 fifteen polymorphic fragments were present in both resistant lines. They were selected for sequence specific marker conversion. Seven of the fifteen sequence characterized amplified region (SCAR) markers were polymorphic on the Nil pairs and five mapped to one region of maize chromosome 8.05/06. Twenty-one AFlP markers were identified for Ht1 and four SCAR markers were polymorphic In the Ht1 Nils. Three of these were mapped to chromosome 2.07. Three AFlP markers were identified for Ht2 of which two were converted to SCAR markers. Both SCAR markers were polymorphic on the Ht2 Nils and mapped to chromosome 8.05/06. On the Ht3 NILs, four AFLP markers were identified and two converted SCAR markers and one microsatellite marker (bnlg1666) were polymorphic. One of the SCAR markers and the microsatellite marker were mapped to chromosome 7.04 using a RIL population. This reports the first tentative mapping position for the Ht3 locus. The next step was to determine if a set of marker alleles could be used in a number of Htn 1 resistance lines to identify a common donor region selected by the breeders. Nine markers consisting of five SCAR markers, three converted RFLP markers and one microsatellite marker were used on 16 Htn1 resistant lines. The marker allele of us3 was in 12 of the 16 lines in coupling with Htn1 resistance. Second was the marker us5 in 11 of the 16 lines. Using this data 14 of the 16 lines shared a common introgressed region between the markers us3 and us5. A further common introgressed region between 11 of the inbred lines was found between the markers us14 and asg17. The last aim of this study was to propose a new marker technique that might be more successful than the AFLP technique in the identification of markers closely linked to genes. A new marker approach was identified where a MITE (Hbr) primer was used as an anchor primer in combination with resistance gene analog primers. This was found to be a highly polymorphic marker technique that could be used to identify markers and possibly candidate genes. It is a robust technique, which is affordable since amplifications occur from undigested genomic DNA and the primers mainly amplify fragments from genic regions.
AFRIKAANSE OPSOMMING: Mielies (Zea mays) is ongetwyfeld Suid Afrika se belangrikste lanbou gewas. Vir volgehoue opbrengs verbetering is die identifisering van merkers en gene vir belangrike eienskappe noodsaaklik. Noordelike blaarskroei (NBS) kan opbrengs wesenlik kan beïnvloed. Tans is daar reeds "n aantal enkel weerstandsgene geïdentifiseer, maar geen PKR-merkers is beskikbaar vir merker gebaseerde seleksie nie. Die doelwit van hierdie studie was om PKR-merkers te ontwikkel vir vier enkel weerstands gene (Ht1, Ht2, Ht3 en Htn1) teen NBS in mielies. Om die doelstelling te bereik is die AFLP-tegniek eers geoptimiseer. Op grond van waargenome aantal polimorfismes, was Mlul/Mse/"n beter restriksie ensiem kombinasie as Pstl/Msel. In die studie is ook bewys dat die aantal (meer as twee) restriksie ensieme wat gebruik word slegs die aantal fragmente, en nie die persentasie polimorfismes, wesenlik beïnvloed nie. Geen segregerende populasie was vir die verskillende gene beskikbaar nie. Naby isogeniese lyne (NILe) is daarom in kombinasie met die AFLP-tegniek gebruik om merkers te identifiseer wat naby die gene karteer. Alleenlik polimorfiese merkers wat in ten minste twee weerstand biedende of vatbare lyne voorgekom het, is gekloneer en omgeskakel na PKR-merkers. Daarna is twee kommersiële rekombinante ingeteelde lyn populasies gebruik om die gene te karteer. Vyftien fragmente is gevind wat gekoppel was met die Htn1 weerstand. Sewe van hierdie merkers is omgeskakel in polimorfiese SCAR-merkers waarvan vyf gekarteer is in een gebied op chromosoom 8.05/06. Een-en-twintig AFLP-merkers is geïndentifiseer vir Ht1 en vier is omgeskakel na polimorfiese SCAR-merkers. Drie hiervan is gekarteer op chromosoom 2.07. Drie AFLP-merkers is geïndetifiseer vir Ht2 waarvan 2 omgeskakel is na polimorfiese SCAR-merkers. Altwee hierdie merkers is gekarteer op chromosoom 8.05/06. Op die Ht3 lyne is vier AFLP-merkers geïdentifiseer waarvan twee omgeskakel is na polimorfiese SCAR-merkers. Een mikrosatelliet merker (bnlg1666) is ook gevind wat die selfde polimorfiese patroon wys op die Ht3 lyne. Die mikrosateliet en een van die SCAR-merkers het gekarteer op chromosomale posisie 7.04. Hierdie is die eerste tentatiewe posisie vir die Ht3 lokus. Die volgende stap was om te bepaal of "n stel polimorfiese merker-allele gebruik kan word om die donor DNA-segment te identifiseer wat die plantteiers geselekteer het. Nege PKR-merkers wat bestaan het uit vyf SCAR-merkers, 3 omgeskakelde RFLP merkers en een mikrosateliet is gebruik op 16 Hnt1 weerstandslyne. Us3 was die merker alleel wat in die meeste gevalle gekoppel was met die Htn1 weerstandslyne (12/16). Tweede was die merker us5 (in 11 van die 16 lyne). Uit die data blyk dit dat 14 van die 16 lyne "n donor segment het wat beide merkers us3 en us5 bevat. Merkers us14 en asg17 het in 11 van die 16 bestande lyne saam voorgekom. Die laaste doelstelling van hierdie studie was om "n nuwe tegniek te ontwikkel wat dalk meer suksesvol as AFLPs kan wees om merkers te identifiseer nabyaan gene. "n Nuwe tegniek word voorgestel waar "n MITE (Hbr) inleier gebruik kan word in kombinasie met weerstandgeen-analoog inleiers. Dit is gevind dat hierdie kombinasie van inleiers "n hoogs polimorfiese band patroon gee en dat die merkers ook dalk kandidaat-gene kan wees. Die tegniek is maklik uitvoerbaar, relatief goedkoop en maak gebruik van onverteerde genomiese DNA. Die fragmente wat geamplifiseer word is hoofsaaklik vanaf geenryke areas.
Laughlin, Thomas Fain. "Hypervariable DNA markers and population structure in three fish species." Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06062008-171854/.
Full textLiu, Shaolin 1968. "Oligonucleotides applied in genomics, bioinformatics and development of molecular markers for rice and barley." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85569.
Full textKennedy, Aaron P. "Investigations into obesity using anthropometric, serum and genetic markers/." Internet access available to MUN users only. Search for this title in:, 2010.
Find full textChiu, Kam-hung, and 趙錦鴻. "Genetic aberrations in chronic lymphocytic leukaemia as prognostic markers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290781.
Full textTopipat, Chutima. "Genetic and metabolic markers of ageing in sheep oocytes." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/22244/.
Full textBurrows, Kimberley. "Molecular genetic epidemiology studies of quantitative nucleic acid markers." Thesis, University of Bristol, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.761240.
Full textGupta, Jayanta. "Genetic and Biological Markers of Atopic Dermatitis in Children." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204843640.
Full textChiu, Kam-hung. "Genetic aberrations in chronic lymphocytic leukaemia as prognostic markers." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41290781.
Full textChalmers, Kenneth James. "The development and utilization of genetic markers for barley." Thesis, University of St Andrews, 1992. http://hdl.handle.net/10023/14402.
Full textBrand, Elizabeth Gertruida. "Selectable markers for recombinant poxvirus." Thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/25692.
Full textMoro-Méndez, José. "Associations between genetic markers and mastitis resistance in Canadian Holsteins." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85943.
Full textUsing lactation records of cows enrolled in milking recording in Quebec (Programme d'Analyse des Troupeaux Laitiers du Quebec, PATLQ from 1980 to 1994 (411,291 first, 238,432 second, and 130,983 third lactations, respectively) Estimated Transmitting Abilities of traits were generated with a model that included the random effect of sire, and fixed effects of herd-year-season-of calving, age at calving, and genetic group. 721 bulls which had daughters in the phenotypic data sets were genotyped for twenty polymorphisms of the above genes located on autosomes (BTA) 5, 11, 14, 19, 20, and 23.
Two types of analysis of associations were performed: analysis across-population with a model that included the fixed effect of marker and random effect of the son of grandsire, and within-family analysis with a model that included the fixed effects of the grandsire, marker nested within grandsire, and the random effect of son nested within marker and grandsire. Permutation tests were performed to reduce Type I error probability.
Significant associations were found within families for markers of IGF-1 (BTA5), ODC (BTA11), GH (BTA 19), GHR (BTA 20), and PRL (BTA 23) for ICM, OCM, CDM, and SCS in different lactations. Some of these putative quantitative trait loci (QTL) are located on BTA where other authors have reported QTL affecting SCS and udder conformation. The results from this study may contribute to efforts to dissect the genetic basis of mastitis resistance in dairy cattle.
Lambert, Carol-Ann. "A novel marker technique : using miniature inverted-repeat transposable elements (MITEs) in combination with resistant gene analogues (RGAs)." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52117.
Full textENGLISH ABSTRACT: Given the organisation of the maize genome as well as demands placed on the saturation of molecular linkage maps it would be desirable to identify informative molecular markers that is located or linked to genic rich areas. Sequences of gene products from different gene classes were investigated. Proteins containing a nucleotide binding site (NBS) and leucine-rich repeat (LRR) region comprise the largest class of disease resistance proteins. Resistant gene analogue (RGA) primers belonging to this specific class were derived from previous published literature studies. By means of similarity studies of short stretches of conserved amino acid and DNA sequences, primers were developed that belonged to the peroxidase and reductase gene classes. A novel class of transposable element was identified, that occurred in the gene rich areas of a diverse range of grass genomes. Of all the MITE families described so far, the Heartbreaker (Hbr) and Hb2 family elements were of particular interest. The unique properties of MITEs, especially their high copy number, polymorphism, stability and preference for genic areas together with the RGA primers, were exploited to develop a new marker technique for the isolation of a class of molecular marker with a strong preference for genic areas. Using the publicly available recombinant inbred population, Tx303 x C0159, 196 MITE/RGA markers were added to the existing recombinant inbred linkage map consisting of ±1033 already established markers. It became apparent that just like loci for disease resistance, the 196 MITE/RGA fragments were not randomly distributed across the maize genome but occurred in clusters spread across the ten maize chromosomes. Ninety-two (92) of the MITE/RGA fragments showed significant correlation to previously mapped maize resistance genes. To establish the conservation and specificity of both the Hbr and Hb2 elements, sequences of 19 MITE/RGA fragments were ascertained. When comparing the partial MITE element sequences from these fragments, a high degree of element conservation was observed. One fragment showed good sequence correlation to a NADPH He Toxin reductase protein product and mapped to the same chromosomal location as the hm1 gene locus in maize. This fragment can be considered a candidate gene for resistance against the pathogen, Helminthosporium carbonum. The Hbr primer used proved to be very specific for the Heartbreaker MITE element, this was in contrast to the non-specificity of the Hb2 primer. The applicability of this technique was tested on two maize diseases that cause immense damage in the maize production industries in South Africa. Fourteen MITE/RGA markers were used to fine map the putative chromosomal locations for the HtN1, Ht1, Ht2 and Ht3 genes that confer resistance. against Setosphaeria turcica, the northern corn leaf blight (NelS) pathogen in maize. Three MITE/RGA fragments were identified that aided in the saturation of the linkage map for quantitative trait resistance (QTl) against gray leaf spot (GlS) in maize. This novel MITE/RGA technique presented a unique opportunity to search for additional candidate genes by using polymerase chain reaction (peR) analysis. When compared to the conventional amplified fragment length polymorphism (AFLP) technique, the MITE/RGA technique proved to be just as efficient but was more cost effective and less time consuming.
AFRIKAANSE OPSOMMING: Die organisasie van die mielie genoom as ook die vereistes wat daar geplaas word op die versadiging van koppelingskaarte, vereis dat daar meer klem geplaas word op die ontwikkeling van molekulêre tegnieke wat merkers in geenryke areas identifiseer. Die volgordes van geenprodukte, wat behoort tot verskillende geenklasse, is deeglik bestudeer. Proteïenprodukte wat bestaan uit 'n nukleotiedbindingsarea (NBA) en 'n leusienryke herhalende (LRH) area is een van die grootste klasse waaronder siekteweerstandsproteïene sorteer. Polimerase kettingreaksie (PKR) inleiers wat behoort tot hierdie spesifieke klas, is verkry vanuit vorige publikasies. Deur kort gekonserveerde aminosuur en DNS volgordes te vergelyk is inleiers ontwikkel wat behoort tot die peroksidase en reduktase gene klasse. 'n Nuwe klas transponeerbare elemente wat voorkom in die geenryke areas van diverse gras genome, is geïdentifiseer. Van al die miniatuur inversie herhalende transponeerbare elemente (MITE) wat al geïdentifiseer is, is die twee elemente, Heartbreaker (Hbr) en Hb2, van groot belang. Unieke eienskappe van die MITEs, veral hul hoë kopie aantal, polimorfiese-indeks, stabiliteit asook voorkeur vir geenryke areas, tesame met die weerstandsgeen analoë (WGA) inleiers, is gebruik om 'n nuwe merker tegniek te ontwikkel. Hierdie nuwe tegniek identifiseer 'n klas merker wat 'n sterk voorkeur het vir geenryke areas. Deur gebruik te maak van die openbare beskikbare rekombinante ingeteelde (RI) populasie, Tx303 x C0159, is 196 MITE/WGA-merkers gekarteer op die bestaande RIL koppelingskaart, wat alreeds bestaan uit ±1033 gevestigde merkers. Net soos die lokusse vir siekteweerstand het dit geblyk dat hierdie 196 merkers in groepe voorkom wat verspreid is oor die tien mielie chromosome. Twee-en-negentig (92) van die 196 gekarteerde MITE/WGA-merkers het betekenisvolle korrelasie gewys met reeds gekarteerde mielie weerstandsgene. Die volgordes van 19 MITE/WGAfragmente is bepaal om sodoende die spesifisiteit en mate van konservering van die Hbr and Hb2 elemente te bereken. 'n Hoë mate van element konservering is waargeneem. Een fragment het In baie goeie volgorde korrelasie gewys met In NADPH HG toksien reduktase proteïen produk en karteer op dieselfde chromosomale posisie as die hm1 geen lokus. Hierdie fragment kan gesien word as In kandidaatgeen vir weerstand teen die mielie patogeen, Helminthosporium carbonum. Die toepasbaarheid van hierdie tegniek is getoets op twee siekte toestande, wat lei tot groot verliese in die mielie industrie, in Suid-Afrika. Veertien van die MITE/WGAmerkers is gebruik om die waarskynlike chromosomale posisies van die HtN1, Ht1, Ht2 en Ht3 gene, wat weerstand bied teen Setosphaeria turcica, die noordelike mielie blaarvlek (NMBV) patogeen, fyner te karteer. Drie MITE/WGA fragmente is geïdentifiseer wat gehelp het in die versadiging van die koppelingskaart vir die kwantitatiewe kenmerk weerstandbiedenheid (KKW) teen grys blaarvlek (GBV) in mielies. Deur gebruik te maak van polimerase kettingreaksie (PKR) analise, verskaf hierdie tegniek die moontlikheid om te soek vir addisionele kandidaatgene. Hierdie tegniek is ook vergelyk met die konvensionele geamplifiseerde fragment lengte polimorfisme (AFLP) tegniek. Daar is gevind dat die nuwe tegniek net so informatief is, maar wel meer koste effektief en tyd besparend.
Hibbets, Eric Matthew. "Molecular Characterization of Hybridization Between Magellanic (Spheniscus magellanicus) and Humboldt (Spheniscus humboldti) Penguins in the Wild." Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1562071641076803.
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Full textDrasar, Emma Rachel. "Genetic and biological markers of severity in sickle cell disease." Thesis, King's College London (University of London), 2014. https://kclpure.kcl.ac.uk/portal/en/theses/genetic-and-biological-markers-of-severity-in-sickle-cell-disease(7c1f16a0-0862-4311-ae7f-7842a85e915e).html.
Full textSant, V. J. "Genetic diversity and linkage analysis in chickpea using DNA markers." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2001. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2852.
Full textCampino, Susana Gomes. "Genetic analysis of murine malaria /." Umeå : Univ, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-124.
Full textGupta, Manu. "Autoimmune markers in autoimmune diabetes /." Stockholm, 2003. http://diss.kib.ki.se/2004/91-7349-756-8/.
Full textBoersma, Jeffrey George. "Contributions to the molecular genetics of the Narrow-leaf Lupin (Lupinus augustifolius L.) : mapping, marker development and QTL analysis." University of Western Australia. School of Earth and Geographical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0001.
Full textRae, Stephen J. "Isolation and characterisation of simple sequence repeat markers for Beta vulgaris." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274669.
Full textDonati, Mauro. "Gene polymorphisms and related cell markers in periodontitis lesions /." Göteborg : Department of Periodontology, Institute of Odontology, The Sahlgrenska Academy at University of Gothenburg, 2009. http://hdl.handle.net/2077/20298.
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