Genomic diversity and evolution of the head crest in the rock pigeon.
Genomic diversity and evolution of the head crest in the rock pigeon.
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DOI:
10.1126/science.1230422
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发表时间:
2013-03-01
期刊:
影响因子:
--
通讯作者:
Wang J
中科院分区:
文献类型:
--
作者:
Shapiro MD;Kronenberg Z;Li C;Domyan ET;Pan H;Campbell M;Tan H;Huff CD;Hu H;Vickrey AI;Nielsen SC;Stringham SA;Hu H;Willerslev E;Gilbert MT;Yandell M;Zhang G;Wang J
The geographic origins of breeds and genetic basis of variation within the widely distributed and phenotypically diverse domestic rock pigeon (Columba livia) remain largely unknown. We generated a rock pigeon reference genome and additional genome sequences representing domestic and feral populations. We find evidence for the origins of major breed groups in the Middle East, and contributions from a racing breed to North American feral populations. We identify EphB2 as a strong candidate for the derived head crest phenotype shared by numerous breeds, an important trait in mate selection in many avian species. We also find evidence that this trait evolved just once and spread throughout the species, and that the crest originates early in development by the localized molecular reversal of feather bud polarity.
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期刊:
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