By cloning themselves with 'virgin births' and reproducing sexually, aphids maximise their chances of survival.

通过" 单性生殖" 的无性繁殖以及有性繁殖，蚜虫使它的生存机会最大化。

I was covered in a cloak of asexuality.

我被贴上无性恋的标签。

First, some organisms reproduce asexually, so they don't need other organisms to produce offspring.

首先，有些生物是无性繁殖的，所以它不需要其生物来繁殖后代。

But, thanks to genetic testing, we've learned that this stand of aspen covering 106 acres of land is actually a single clonal organism that grew from a lone seed long ago.

不过，正是由于基因检测，我发现这片覆盖 106 英亩的山杨实际上是由很长时间前的一粒种子无性繁殖出来的。

The researchers said they believe it is the first case of asexual reproduction in any bird species where the female had access to a mate.

研究人员，为，这是鸟类中第一例雌鸟在有交配机会的情况下进行的无性繁殖。

And that's a really dangerous situation for aspen because it really depends on continuous growth of the whole clone.

这对山杨来说是非常危险的情况，因为山杨非常依赖整体无性繁殖的持续增长。

Despite the advantages of going without sex, in reality fewer than one percent of all animals are celibate - live without having sex.

尽管无性有很多好处，但是在现实中，只有不到百分之一的动物是无性的 —— 没有性生活。

This cycling between sexual and asexual phases is called the alternation of generations, and it helps keep plants flourishing, from Granddaddy Succulent to Great-grandbaby Succulent — and even beyond that.

这种有性和无性之间的循环被称为世代交替，它有助于保持植物的繁盛，从祖孙多肉植物到曾孙多肉植物，甚至更远。

And yet, less than one percent of all animal species are completely celibate - and that's a huge fundamental puzzle in evolutionary biology that we're still not entirely sure we understand - it's called sometimes the paradox of sex.

然而，所有物种中还有不到百分之一的是完全无性的 —— 而这是演化生物学中一个巨大的基础性疑问，我还无法完全确信我理解了 —— 这有时候叫做性的悖论。

Through an asexual reproduction process called parthenogenesis.

通过一种称为孤雌生殖的无性繁殖过程。

We found asexual worms, 100 times longer than microbes, hunting  and devouring bacteria.

我发现了无性繁殖的蠕虫，它的长度是微生物的100倍，捕猎并吞噬细菌。

In asexually reproducing species, the only source of variation is mutation.

在无性生殖的物种中，变异的唯一来源是突变。

A new species of asexual, asocial males.

一种新型的无性、不合群的男性。

A lot of men in sexless marriages and so forth.

很多处于无性婚姻中的男性等等。

We're having like a sexless, yeah, a sexless generation right now.

我现在正处于一个，呃，无性的一代。

That was Rahul and he grew albeit asexually, very rapidly.

那就是拉胡尔，尽管是无性的，但成长得非常迅速。

Experts think this pregnancy may be the result of something called parthenogenesis, which is the type of asexual reproduction in which there is no genetic contribution by a male, or what many women refer to as best-case scenario.

专家为这次怀孕可能是由于一种名为单性生殖的现象，这是一种无性繁殖的方式， 其中没有雄性基因的参与，或者用许多女性的话来说， 这是最佳情景。

And I think this kind of thing, the bickering and sometimes this other problem of no sex, which I sort of morphed into, is to do with sort of unresolved hatred that's sort of gone underground.

我为这种争吵，有时还有我逐渐演变成的无性问题，都与那种潜藏未解的恨意有关。

She was free; she had no illusions; she was sexless; she had discarded all that the male disliked; and although she secretly regretted the discard, she knew that she could not go backward.

她是无性的； 她抛弃了男性不喜欢的一切； 尽管她暗自后悔， 但她知道自己不能倒退。

The most common form of asexual cellular reproduction, and the one you are most likely to know about, in the microcosmos, is binary fission.

在微观世界中， 最常见的无性细胞繁殖形式，也是你最有可能了解的，就是二分裂。