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020 ▼a 9781687932679
035 ▼a (MiAaPQ)AAI22617421
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 575
1001 ▼a Wang, Bowen.
24510 ▼a Realized Genome Sharing in Random Effects Models for Quantitative Genetic Traits.
260 ▼a [S.l.]: ▼b University of Washington., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 110 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
500 ▼a Advisor: Thompson, Elizabeth A.
5021 ▼a Thesis (Ph.D.)--University of Washington, 2019.
506 ▼a This item must not be sold to any third party vendors.
506 ▼a This item must not be added to any third party search indexes.
520 ▼a DNA copies inherited from the same ancestral copy by related individuals are said to be identical by descent (IBD). IBD gives rise to genetic similarities between related individuals. In quantitative genetics, two fundamental problems are heritability estimation and gene mapping for genetic traits. IBD plays a critical role in the study of both problems. When working with population-based samples where pedigree information is unavailable, it is essential to estimate IBD accurately from genetic marker data using pedigree-free methods. The estimated IBD can then be used in heritability estimation and gene mapping using random effects models.For pedigree-free IBD estimation, we showed that it is important to use the fact that DNA is inherited in segments as opposed to independent loci. As the single nucleotide polymorphism (SNP) marker panels become increasingly dense, the impact of allelic association (or linkage disequilibrium, LD) on accuracy of IBD estimation also grows. Through simulation studies, we demonstrated that adjusting for LD in the marker panel can lead to improved IBD estimation accuracy. For heritability estimation and gene mapping using random effects models, a difficult task is to specify the correlation structures of the random genetic effects, which are typically functions of IBD sharing over the putative causal genomic region. We provided formulas for the asymptotic bias and sampling error of heritability estimates, when the genetic correlation structures are potentially mis-specified. Mis-specification of the genetic correlation structures can occur due to inaccurate IBD estimation or mis-identification of the causal genome. We showed that such mis-specification can lead to substantial downward bias in heritability estimation, or loss of power in gene mapping.
590 ▼a School code: 0250.
650 4 ▼a Statistics.
650 4 ▼a Genetics.
690 ▼a 0463
690 ▼a 0369
71020 ▼a University of Washington. ▼b Statistics.
7730 ▼t Dissertations Abstracts International ▼g 81-04B.
773 ▼t Dissertation Abstract International
790 ▼a 0250
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15493463 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK