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|Title:||The Role of Pedigree Information in Combined Linkage Disequilibrium and Linkage Mapping of Quantitative Trait Loci in a General Complex Pedigree||Contributor(s):||Lee, Sang Hong (author); Van Der Werf, JH (author)||Publication Date:||2005||DOI:||10.1534/genetics.104.033233||Handle Link:||https://hdl.handle.net/1959.11/495||Abstract:||Combined linkage disequilibrium and linkage (LDL) mapping can exploit historical as well as recent and observed recombinations in a recorded pedigree. We investigated the role of pedigree information in LDL mapping and the performance of LDL mapping in general complex pedigrees. We compared using complete and incomplete genotypic data, spanning 5 or 10 generations of known pedigree, and we used bi- or multiallelic markers that were positioned at 1- or 5-cM intervals. Analyses carried out with or without pedigree information were compared. Results were compared with linkage mapping in some of the data sets. Linkage mapping or LDL mapping with sparse marker spacing (5 cM) gave a poorer mapping resolution without considering pedigree information compared to that with considering pedigree information. The difference was bigger in a pedigree of more generations. However, LDL mapping with closely linked markers (1 cM) gave a much higher mapping resolution regardless of using pedigree information. This study shows that when marker spacing is dense and there is considerable linkage disequilibrium generated from historical recombinations between flanking markers and QTL, the loss of power due to ignoring pedigree information is negligible and mapping resolution is very high.||Publication Type:||Journal Article||Source of Publication:||Genetics, 169(1), p. 455-466||Publisher:||Genetics Society of America||Place of Publication:||United States||ISSN:||0016-6731||Field of Research (FOR):||060412 Quantitative Genetics (incl Disease and Trait Mapping Genetics)||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Statistics to Oct 2018:||Visitors: 116
|Appears in Collections:||Journal Article|
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