Identical twins,however, are developed from the same egg.

VOA: special.2010.03.23

But what if you are able to find identical twins who were separated at birth, and reared in radically different environments.

如果你能找到，出生时就分开了的,同卵双胞胎，在完全不同的环境里长大。

哈佛公开课 - 幸福课课程节选

You look at identical twins, monozygotic twins who share the same genetic profile.

同卵双胞胎，他们拥有相同的基因谱。

哈佛公开课 - 幸福课课程节选