一个EDAR基因的变种形式在东亚人和美洲原住民中非常普遍，可能是这些人口拥有比欧洲人或非洲人更厚的头发的原因。

A variant form of the EDAR gene is very common in East Asians and Native Americans, and is probably the reason that these populations have thicker hair than Europeans or Africans.

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因此，在大规模的研究中所使用的绝大多数基因样本都是血液的形式。

Thus, the vast majority of genetic samples used in large-scale studies come in the form of blood.

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在正常形式下，BRCA1和BRCA2基因通过产生阻止细胞生长失控的蛋白质来预防乳癌。

In their normal form, BRCA1 and BRCA2 genes prevent breast cancer by producing a protein that stops cells from growing out of control.

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One of the forms of processing that happens, that's very important in human gene expression is that some of the sections of the DNA molecule are not really necessary for describing the protein.

在人类的基因表达中,有一种非常重要的加工形式,那就是在DNA分子中有一些片段,对于编码蛋白质而言毫无用处

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