Mitosis produces identical copies of cells and is involved in growth, cell repair, and asexual reproduction, which is how simple organisms reproduce.

有丝分裂发生在生长、细胞修复和无性繁殖，会复制出一模一样的细胞，这是简单生物体繁殖的方式。

But some species that have sex cells can undergo a type of asexual reproduction called parthenogenesis — meaning " virgin origin" in Greek.

不过，一些具有性细胞的物种可以进行一种无性繁殖，即“孤雌生殖”，在希腊语中是“处女起源”的意思。

From this video, you should now know that mitosis is how cells divide in order to grow and repair, or for asexual reproduction.

通过这个视频，你现在应该知道有丝分裂是细胞为了生长和修复或无性生殖而分裂的过程。

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.

研究人员表示，他们认为，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。

This is because it introduces new, potentially beneficial, mutations faster than asexual reproduction.

这是因为它比无性繁殖更快地引入新的、可能有益的突变。

Parthenogenesis is a type of asexual reproduction where an embryo develops without previous fertilization.

孤雌生殖是一种无性生殖，其中胚胎无需先前受精即可发育。

Conjugation is thus considered a sexual phenomenon which is immediately followed by repeated asexual reproduction.

因此，共轭被认为是一种有性现象，紧随其后的是重复的无性繁殖。

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，无性生殖所需的努力比有性生殖要少， 因为雌性不需要浪费资源寻找配偶。