He's also one of the principal investigators of the twin study.

他也是子研究的主要研究者之一。

The doppelganger? -Evil twin shadow person.

二重身？-不详的神秘者。

This apparent contradiction is known as the " Twin Paradox."

这种明显的矛盾被称为“子佯谬”。

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

假设你发现单卵子比卵子更似。

Are monozygotic twins just as similar as dizygotic twins?

单卵子和卵子一样似吗？

Twin studies show a strong genetic component, although we don't know which genes are involved. But environment matters, too.

根据子研究， 自恋和基因有关，虽然我们还无法知道，究竟是些什么基因参与其中，不过，外在环境的影响是不容忽视的。

This is an example of twinning or gemination. Here are some more examples.

这是孪或的一个例子。 这里还有一些例子。

When the time came for her to give birth, there were twin boys in her womb.

他玛将要产，不料她腹里是一对。

27 When her time came to give birth, it turned out that there were twins in her womb.

27 他玛将要产，不料他腹里是一对。

For the twin study, NASA monitored everything Scott ate and drank while Mark continued his regular diet back here on Earth.

至于子研究，一方面美国宇航局对Scott的饮食进行监控，另一方面Mark在地球上进行正常的饮食。

One of the hugely surprising findings from behavioral genetics is how alike identical twins reared apart are.

行为遗传的一个巨大的惊奇发现是， 即使是被分开教养的同卵子也是多么似。

Your teeth are like a flock of sheep coming up from the washing. Each has its twin, not one of them is missing.

你的牙齿如一群母羊，洗净上来，个个都有，没有一只丧掉子的。

Thanks to research like NASA's twin study which you'll hear about in a minute, scientists are getting an idea about how extended time in space effects people.

多亏了下面即将介绍的美国航天局的子研究，科家们正在了解长时间在太空中活对人类的影响。

Your teeth are like a flock of sheep just shorn, coming up from the washing. Each has its twin; not one of them is alone.

你的牙齿如新剪毛的一群母羊，洗净上来，个个都有，没有一只丧掉子的。

Research published in the journal PLOS Genetics, explains how twin studies have shown that about 40% of the variation in a person's weight is affected by their genes.

发表在《公共科图书馆·遗传》杂志上的一项研究解释了研究如何表明，一个人体重中约有40％的变化受到基因的影响。

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， 单卵子的貌更似， 可能是因为他们有着不同的、更似的环境。

But if you think about the area that the twin study was involved in things like say, identifying what might be epigenetic damage to the geno that might proceed the development of mutations that could lead to cancer risk.

但是如果你想想子研究涉及的领域，比如，确定引起基因表观遗传损伤加快基因突变从而导致患癌风险的因素。