Identical twins have the same genotype but can have different phenotype.

同卵双胞胎有相同的基因型，但可以有不同的表型。

Epigenetics can help explain why identical twins can have different health outcomes.

表观遗传学可以帮助解释为什么同卵双胞胎会有不同的健康结果。

Identical twins are not identical on self-control.

同卵双胞胎在自制力方面并不相同。

Identical twins share all of their genes and fraternal twins share only about half.

同卵双胞胎的基因完全相同，而异卵双胞胎只有大约一半的基因相同。

In other words, identical twins were more likely to play withthe same strategy than fraternal twins.

换句话说, 同卵双生的双胞胎比异卵双生的双胞胎更有可能采取相同的策略.

Identical twins are genetic duplicates, while fraternal twins share only about half their genes and are no more genetically alike than ordinary siblings are.

同卵双胞胎的基因完全一样；异卵双胞胎的基因只有一半完全一样；异卵双胞胎的基因恐怕并不比普通兄弟姐妹之间的基因更加相似。

The researchers had 102 pairs of identical twins and 71 pairs of fraternal twins look at 20 different images of faces for about a second each.

研究人员让102同卵双胞胎和71对异卵双胞胎看20张不同面孔的图像，每张展示1秒钟。

If the identical twins came up with the same answers more often than the fraternal twins did, then it's more likely that genes were the reason.

如果同卵双胞胎给出相同答案的比率高于异卵双胞胎的，那么很大可能是基因造成了这一结果。

The secrets of the X chromosome. These women are identical twins.

X染色体的秘密。这两位女性是双胞胎。

At least one of a pair of identical twins is born evil。

两个长得一模一样的双胞胎中至少有一个生来就很邪恶。