What's more, the work suggests that some duplicate genes play a key role in the evolution of new traits and in speciation.
并且，研究工作表明，一些复制的基因在新的特征进化和物种形成过程中起到非常重要的作用。
So Dennis and her colleagues examined the duplicate genes in more than 150 people and found that the copy made 3.4 million years ago is missing in some people.
为此，丹尼斯和同事检测了超过150人的基因，发现其中一些人不具有340万年前产生的那个SRGAP2基因副本；
Also, such stem cells may have duplicate copies of some mutant genes that have been linked to cancer and abnormal tissue growth.
因此，一些干细胞可能带有与癌症或者组织的异常生长相关的突变基因的双份拷贝。
When you look at it this way, self-centered genes are in charge of evolution, and organisms are just a way for genes to duplicate themselves.
这种理论认为：自私自利的基因负责进化，生物体只是基因复制自身的一种方式。
It applies to duplicate recessive genes.
它适用于双隐性基因。
They knew from past studies that it was common for organisms exposed to artificial selection to carry evidence of such tinkering in the form of duplicate chromosomes and genes.
他们从以往的实验中发现人人工培育通常会留下缝缝补补的痕迹——那些人工培育的微生物，常常都带有重复的染色体和基因。
They knew from past studies that it was common for organisms exposed to artificial selection to carry evidence of such tinkering in the form of duplicate chromosomes and genes.
他们从以往的实验中发现人人工培育通常会留下缝缝补补的痕迹——那些人工培育的微生物，常常都带有重复的染色体和基因。
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