What's the difference between a gamete and a zygote?

殖细胞和受精卵的区别是什么？

Its stable temperature and high density help preserve and disperse reproductive cells.

稳定的温度和较高的密度有助于保存和分散殖细胞。

Work is already under way to develop principles for editing reproductive cells.

编辑殖细胞的原则制定经开始。

" FYI this is probably the first human germ line editing, " Dr. Quake wrote.

“谨供参考：这可能是人类殖细胞的首次编辑，”奎克写道。

She added, " It's an important step in both stem cell and reproductive biology."

她补充说，“这是干细胞和殖物学的重要一步。”

They did this by turning mouse stem cells into female cells in a lab.

他们在实验室里将老的干细胞转为雌性殖干细胞，从而实现了这一点。

Another, they're releasing reproductive cells called spores.

后来，它们又释放一种叫做孢子的殖细胞。

This is possible because organisms evolve when random mutations happen in the DNA of reproductive cells.

这是可能的，因为当殖细胞的DNA发随机突，物就会进化。

Histologically, prominent features include large, round tumor cells resembling germline tumors; or small cells forming Homer-Wright rosettes.

松果体瘤主要的组织学特征包括类似殖细胞肿瘤中巨大圆形的肿瘤细胞，或是形成Homer-Wright菊形团的小细胞。

Diana Laird is a stem cell and reproductive expert at the University of California, San Francisco.

戴安娜·莱尔德是加州大学旧金山分校的干细胞和殖专家。

Unless land organisms return to the water to reproduce or have specially adapted sex cells, their options are limited.

除非陆地物回到水中繁殖或有特别适应的殖细胞，否则它们的选择是有限的。

Many algae, for example, have sex cells that are indistinguishable in size.

例如，许多藻类的殖细胞大小难以区分。

So, a germ cell ovarian cancer refers to situations where these precursor germ cells become cancerous and form tumors.

因此，卵巢殖细胞癌就是指位于卵巢的殖细胞癌形成的肿瘤。

It does not always involve strictly female and male individuals with differently sized sex cells that fuse internally.

它并不总是严格涉及拥有不同大小内部融合的殖细胞的女性和男性个体。

And, each follicle is made up of a germ cell, also known as an oocyte, which is the immature egg.

每一个卵泡都由一个殖细胞组成，也就是卵母细胞，就是未成熟的卵子。

These are the most common germ cell tumor in children, and the tumors can be very aggressive.

这是最常发于儿童身上的殖细胞瘤，肿瘤侵袭性较强。

Some originate from ovarian germ cells, such as mature cystic teratomas, also called dermoid cysts.

有的起源于卵巢殖细胞，例如成熟的囊性畸胎瘤，又名皮样囊肿。

The other option is the sister chromatids of the x chromosome don't separate in meiosis two in the female germ cell.

女性殖细胞中，X染色体姐妹染色单体在第二次减数分裂没有分离。

However, each reproductive cell has only 23 individual chromosomes.

然而，每个殖细胞只有 23 条独立的染色体。

Germ cells, as they're called, developed inside a fortress-like structure within the testes.

这些所谓的殖细胞是在睾丸内一个类似堡垒的结构内发育的。