Leonard Jennifer A, Wayne Robert K, Wheeler Jane, Valadez Raúl, Guillén Sonia, Vilà Carles
Department of Organismic Biology, Ecology and Evolution, University of California, Los Angeles, CA 90095-1606, USA.
Science. 2002 Nov 22;298(5598):1613-6. doi: 10.1126/science.1076980.
Mitochondrial DNA sequences isolated from ancient dog remains from Latin America and Alaska showed that native American dogs originated from multiple Old World lineages of dogs that accompanied late Pleistocene humans across the Bering Strait. One clade of dog sequences was unique to the New World, which is consistent with a period of geographic isolation. This unique clade was absent from a large sample of modern dogs, which implies that European colonists systematically discouraged the breeding of native American dogs.
从拉丁美洲和阿拉斯加古代犬类遗骸中分离出的线粒体DNA序列表明，美洲本土犬起源于多个旧世界犬类谱系，这些谱系伴随着晚更新世人类穿越白令海峡。犬类序列的一个分支是新世界所特有的，这与一段地理隔离期相符。现代犬类的大量样本中没有这个独特的分支，这意味着欧洲殖民者蓄意阻碍美洲本土犬的繁殖。
