A second-generation genetic linkage map of the domestic dog, Canis familiaris.

A second-generation genetic linkage map of the domestic dog, Canis familiaris.
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家犬(Canisamilis)的第二代遗传连锁图谱。

DOI:
10.1093/genetics/151.2.803
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发表时间:
1999
期刊:
影响因子:
3.3
通讯作者:
Rine,J
Rine,J
中科院分区:
生物学2区
文献类型:
--
作者:
Neff,MW;Broman,KW;Mellersh,CS;Ray,K;Acland,GM;Aguirre,GD;Ziegle,JS;Ostrander,EA;Rine,J

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纯种品系、明显的表型变异和遗传性疾病的高发病率使家犬特别适合补充人类和小鼠的遗传分析。全面的遗传连锁图谱将为狗提供许多机会,从疾病基因的位置克隆到大小、形状和行为的数量差异的剖析。在这里,我们报告了一个犬科动物连锁图谱,其中映射的位点数量扩大到 276 个,10-cM 覆盖范围扩大到基因组的 75-90%。 38 个犬常染色体中的大多数可能代表在 39 个常染色体连锁群的集合中。八个标记的信息足以检测 10-13 cM 距离处的连锁,但仍与任何其他标记无关。总而言之,结果表明基因组大小约为 27 M。与其他物种一样,性别之间的遗传长度有所不同,雌性常染色体距离比雄性减数分裂大约 1.4 倍。十五个标记将详细描述的基因锚定在图谱上,从而作为狗的比较图谱的地标。我们讨论当前地图的实用性并概述未来地图改进所需的步骤。
Purebred strains, pronounced phenotypic variation, and a high incidence of heritable disease make the domestic dog uniquely suited to complement genetic analyses in humans and mice. A comprehensive genetic linkage map would afford many opportunities in dogs, ranging from the positional cloning of disease genes to the dissection of quantitative differences in size, shape, and behavior. Here we report a canine linkage map with the number of mapped loci expanded to 276 and 10-cM coverage extended to 75–90% of the genome. Most of the 38 canine autosomes are likely represented in the collection of 39 autosomal linkage groups. Eight markers were sufficiently informative to detect linkage at distances of 10–13 cM, yet remained unlinked to any other marker. Taken together, the results suggested a genome size of about 27 M. As in other species, the genetic length varied between sexes, with the female autosomal distance being ∼1.4-fold greater than that of male meioses. Fifteen markers anchored well-described genes on the map, thereby serving as landmarks for comparative mapping in dogs. We discuss the utility of the current map and outline steps necessary for future map improvement.
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