Fraternal, or dizygotic, twins share 50 percent of their genes.

而异卵双胞胎则只共享50%的基因。

Are monozygotic twins just as similar as dizygotic twins?

单卵双生子和双卵双生子一样相似吗？

Suppose you find that monozygotic twins are much more similar than dizygotic twins.

假设你发现单卵双生子比双卵双生子更相似。

And was like, " Those are (laughing) diamniotic dizygotic twins." - That he saw all of them.

就像，“那些是（笑）双羊膜异卵双胞胎。” - 他看到了所有人。

For instance, monozygotic twins look more alike than dizygotic twins and maybe they have different and--they have more similar environments because of this similarity in appearance.

比如， 单卵双生子的相貌更相似， 可能是因为他们有着不同的、更相似的环境。

So, if you do the standard behavioral genetic tests, and you by now know how to do them--you'd look for differences between monozygotic and dizygotic twins, you'd do the adoption comparison--you know adopted siblings and biological siblings.

所以， 如果你做标准的行为基因测试，你现在已经知道如何做它们了——你会寻找同卵双胞胎和异卵双胞胎之间的差异，你会做收养比较——你知道收养的兄弟姐妹和亲生兄弟姐妹。