This gene comes in two varieties, one of which has a part missing and therefore does not work properly.

这种基因有两种变体，其中一种由于缺失了一部分而不能正常工作。

youdao

This gene comes in two varieties, one of which has a part missing and therefore does not work properly.

这种基因有两种变体，其中一种由于缺失了一部分而不能正常工作。

youdao