Fraternal twins come from two separate eggs. They are no more alike than any other siblings. Hallelujah!

我们是异卵双胞胎，不比其他兄妹更相像。谢天谢地！

Fraternal twins share half the genes on average.

异卵双胞胎平均有一半的基因相同。

I just needed something solid to stop the fray between those fraternal twins.

我正好需要一个坚硬的东西阻止双胞胎兄弟之间的冲突。

Fraternal twins are much less similar to each other than identical twins are in terms of DNA and odor.

异卵双胞胎在DNA和气味方面比同卵双胞胎差异更大。

Well, it appears that it might be our DNA. Researchers in London looked at identical twins and fraternal twins.

看来这可能是我们DNA（的原因）。伦敦的研究人员对同卵双胞胎和异卵双胞胎进行了研究。

Fraternal twins do not have identical DNA and when they took the mosquitoes and they exposed them to the fraternal twins, the fraternal twins were often bit in differing amounts.

异卵双胞胎的DNA不完全相同，当研究人员捉蚊子让它们去叮咬异卵双胞胎时，双胞胎被叮咬的次数不同。

Comparing resemblance in identical twins to fraternal twins gives us a handle on whether or not genetics has an effect.

通过比较同卵双胞胎和异卵双胞胎的相似性，我们可以了解基因是否会产生影响。

Fraternal twins inherit a separate set of genes, and are not necessarily of the same sex.

异卵双胞胎继承了一组不同的基因，而且不一定是同性。

So experts in London conducted a study between fraternal twins and identical twins to see if there was a difference between the two.

因此，伦敦的学者们在异卵双胞胎和同卵双胞胎之间进行了一项研究，看看两者是否有区别。

My nieces are fraternal, not identical twins.

我的侄女是异卵，不是同卵双胞胎。

Well, I spent many years at the Minnesota study with twins raised apart, looking at identical and fraternal twins who've been separated at birth.

我在明尼苏达州的一个研究中花了很多年研究分开抚养的双胞胎，观察出生时被分开的同卵双胞胎和异卵双胞胎。

The relative frequency of fraternal twins has halved since 1950.

【frequency】自 1950 年以来，双卵性双胞胎的相对发生率下降了一半。

But, comparing identical twins to fraternal twins revealed the correlation was higher for identical twins.

但是，将同卵双胞胎与异卵双胞胎进行比较表明， 同卵双胞胎的相关性更高。

Very early in her own mother's pregnancy with her, Keegan had a fraternal twin.

在她自己的母亲怀上她的时候，基根就有了一个异卵双胞胎。

You could have two boys or two girls who are also fraternal twins.

你可能有两个男孩或两个女孩，他们也是异卵双胞胎。

When they exposed the twins to mosquitoes they found that identical twins were bitten in similar amounts but fraternal twins were bitten in differing amounts.

当他们把这些双胞胎暴露在蚊子之中时，他们发现同卵双胞胎被蚊子咬了同样多的次数，但异卵双胞胎却被咬了不一样的次数。

I have two brothers who are identical twins, and two nieces who I think are fraternal twins.

我有两个同卵双胞胎兄弟，还有两个我认为是异卵双胞胎的侄女。

Researchers recruited 18 pairs of identical female twins and 19 pairs of non identical, or fraternal female twins.

研究人员招募了 18 对同卵双胞胎和 19 对异卵或异卵双胞胎。

If identical twins share a trait to a greater degree than fraternal twins do, it's safe to conclude that the relevant gene significantly influenced that trait.

如果同卵双胞胎在某种特征上比异卵双胞胎更相似，那么可以得出结论，相关基因在这一特征上有显著影响。

These studies follow identical twins and fraternal twins and plain old siblings growing up together or adopted and raised apart.

这些研究跟踪同卵双胞胎、异卵双胞胎和普通的兄弟姐妹一起长大或被收养和分开抚养。