So, why do other animals bother with sex?

那么，为什么还需要有性生殖呢？

So for one thing, they work only in sexually reproducing species.

首先它只能应用于有性生殖物种。

And in the autumn, they switch back to sex.

到了秋季，它们就会回归有性生殖。

Scientists hypothesize that sex makes up for its shortcomings with long-term gains.

科家们提出假说，认为有性生殖长期收益能弥补不足。

It is not involved in sexual mixing, so it changes only by the random process of mutation.

它不参与有性生殖基因重组，所以只有随机突变才会发生变化。

But sexual reproduction in the microcosmos is not like sexual reproduction for the rest of us.

但微观宇宙有性生殖不同于我们其他有性生殖。

Sexual reproduction with gene exchange is going to make a difference.

通过基因交换有性生殖将会产生影响。

So, how does this have to do with sexual reproduction?

那么，这与有性生殖有什么关系呢？

IVF works by mimicking the brilliant design of sexual reproduction.

IVF 工作原理是模仿有性生殖绝妙设计。

Species which reproduce parthenogenetically and sexually have the best of both worlds - enjoy the advantages of very different things at the same time.

既能单性生殖又能有性生殖物种两头受益——同时享有截然不同事物优势。

A coral consists of clonal  colonies of the same organism, although sexual reproduction also occurs  between corals through the release of spores.

珊瑚由同一生物克隆群落组成，尽管珊瑚之间也会通过释放孢子进行有性生殖。

We'll also, if we have time, going to look at sexual reproduction, which is probably what you guys are all interested in anyway.

如果有时间话， 我们还会研究有性生殖，这可能也是你们都感兴趣。

Also, if environmental conditions are poor, asexual reproduction involves less effort than sexual reproduction because the female doesn't need to waste resources finding a mate.

此外， 如果环境条件较差，无性生殖所需努力比有性生殖要少， 因为雌性不需要浪费资源寻找配偶。

Since sexual reproduction is necessary for the reproduction of society, this view says that sex has to be organized in some way, in order for society to function.

由于有性生殖对于社会再生产是必要，这种观点认为性必须以某种方式组织起来，以便社会运作。

It may be worth notice that when Wagner's remarkable discovery was first announced, I was asked how was it possible to account for the larvae of this fly having acquired the power of a sexual reproduction.

值得注意是， 当瓦格纳非凡发现首次被宣布时，有问我如何解释这种苍蝇幼虫获得了有性生殖能力。