牛津大学的格雷格·拉尔森(Greger Larson)是一个大型国际项目的领导者,主持对骨化石中古代DNA的分析工作。拉尔森说这项犬只研究的规模给他留下了深刻的印象。“该研究涵盖的流浪狗数目,以及采样犬只所涉及的地域广度和边远地区的数量,让人觉得很了不起,他在一封电邮中说。他还称赞了对不同种类DNA进行采样的做法以及分析方法。
But in the world of dog studies, very little is definitive. The most recent common ancestor oftoday’s dogs lived in Central Asia, Dr. Boyko said, although he cannot rule out the possibilitythat some dogs could have been domesticated elsewhere and died out. Or dogs domesticatedelsewhere could have gone to Central Asia from somewhere else and then diversified into all thecanines alive today, he said.
但在犬类研究领域,很少有研究是确定的。博伊科博士表示,现存犬种的最近共祖生活在中亚地区,但他无法排除一些犬只可能在其他地方受到驯化并灭绝的可能性。他表示,或者在其他地方经过驯化的犬只从别的地方来到中亚,然后经过多样化发展,演化成现存的所有犬种。
Dr. Larson, who was not involved with the study, said he thought the Central Asia findingrequired further testing. He said he suspected that the origins of modern dogs were“extremely messy and that no amount of sampling of living populations will be definitive. Hesaid a combination of studies of modern and ancient DNA is necessary.
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