In twin pregnancies, for example, one twin can occasionally absorb the other. The resulting individual is built from cells with separate genomes.

例如，在双胎妊娠中，一个胎儿偶尔会把另一个“吸收”掉，最后出生的个体是由具有不同基因组的细胞组成的。

And given that 1 in 8 individual births started out as twin pregnancies, there could be many more people with two genomes— and many more lessons to learn about the genes that make us who we are.

考虑到每 8 个人中就有 1 人出生时是双胞胎，可能会有更多的人拥有两个基因组——以及更多关于造就我们的基因的课程。