Again, my examples of heterozygote advantage offer a useful illustration.

同样，合子优势示例提供了一个有用说明。

Evolutionary biologists call this phenomenon heterozygote advantage.

进化生物学家称这种现象为合子优势。

So heterozygote advantage can help explain why problematic versions of genes persist at high frequencies in certain populations.

因此合子优势可以帮助解释为什么有问题基因版本某些人群中以高频率持续。

But the unusual prevalence of the Tay-Sachs mutation in Ashkenazi populations may be another example of heterozygote advantage.

但德系人群中 Tay-Sachs 突变异常流行可能是合子优势另一个例子。

This idea that there can be circumstances in which heterozygotes are better off might sound familiar to some of you.

有些人可能听起来很熟悉合子可能某些情况下过得更好想法。

This phenomenon is called heterozygote advantage; and its unfortunate consequence is a high rate of sickle cell disease in people from those parts of the world.

该现象被称为合子优势；其伴随不幸后果是这些地区有高比例镰状细胞病患者。