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Mapping of expressed sequence tag markers with a cDNA-amplified fragment length polymorphism method in Japanese quail (Coturnix japonica)

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In our previous study, a Kobe-NIBS Japanese quail (KNQ) linkage map was constructed mainly using amplified fragment length polymorphism (AFLP) markers. In order to compare chicken and quail chromosomes, we developed expressed sequence tag (EST) markers derived from cDNA-AFLP fragments and localized these markers on the linkage map. Using a total of 128 AFLP primer combinations, 24 polymorphic bands were obtained between a neurofilament-deficient mutant quail line male and a muscular disorder quail line female, which were the parents of the KNQ resource family. Nine of the 24 markers were mapped by linkage analysis. These markers were mapped to seven linkage groups, namely 1, 2, 3, 6, 8, 15 and 42. A subsequent homology search using chicken genome sequences strongly suggests that these linkage groups correspond with chicken chromosomes 1, 2, 3, 5, 15, 23 and 26.
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Keywords: Japanese quail; cDNA-amplified fragment length polymorphism; linkage map

Document Type: Research Article

Affiliations: 1: Faculty of Agriculture and 2: Graduate School of Science and Technology, Kobe University, Nada-ku, Kobe-shi and 3: Nippon Institute for Biological Science, Kobuchisawa-machi, Yamanashi-ken, Japan

Publication date: February 1, 2006

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