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Reptile Sets Speed Record For Dna Change

机译:爬行动物创造了Dna变化的速度记录

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Often called a living fossil, the tuatara reptile looks as if it has hardly changed in the more than 200 million years since it shared habitat with the early dinosaurs. But appearances can be deceiving. A report published in March in the journal Trends in Genetics revealed that the lizardlike native of New Zealand has undergone the fastest rate of molecular evolution of any vertebrate animal studied thus far. Evolutionary biologist David Lambert of Griffith University in Australia and his team analyzed DNA samples taken from ancient tuatara bones and from living specimens. He found that over the past 9,000 years, parts of the tuatara genetic code have changed 50 percent more quickly than those of any other vertebrate tested by the same method.
机译:at蜥蜴爬行动物通常被称为活化石,看上去与自早期恐龙共享栖息地以来,在超过2亿年的时间里几乎没有变化。但是外表可能是骗人的。 3月发表在《遗传学趋势》(Trends in Genetics)杂志上的一份报告显示,迄今为止,蜥蜴般的新西兰本土动物经历了所有脊椎动物的最快分子进化速度。澳大利亚格里菲斯大学的进化生物学家戴维·兰伯特(David Lambert)和他的团队分析了从古代tuatara骨头和活体标本中提取的DNA样本。他发现,在过去9000年中,tuatara遗传密码的部分变化比通过相同方法测试的任何其他脊椎动物的变化快50%。

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