Then there is Meiosis for our gametes, because they (gametes) are different.

然后是配子数分，因为它们（配子）是不同的。

The answer lies within the amazing process of meiosis.

答案就在惊人的数分中。

These structures are critical for the process of cell division in next step at meiosis 1.

这些结构对数分 1 的下一步分至关重要。

They then rush through meiosis II, and their resulting daughter cells total four round spermatids.

然后它们快速通数分 II，它们产生的子总共有四个圆形精子。

The end result of meiosis 2 is production of four haploid cells, n chromosomes; (23 in humans) .

数分 2 的最终结果是产生 4 个单倍体，n 染色体；(人类为 23 )。

But right around birth, the oocytes stop developing — they get stuck in the first stage of meiosis.

但是在出生的时候，卵母停止发育——它们卡在数分的第一阶段。

During meiosis, one cell divides twice to form four daughter cells.

在数分中，一个分两次，形成四个子。

During the first cellular division called meiosis I, the chromosomal pairs are separated.

第一次分，即第一次数分后，配对的同源染色体分离。

Meiosis 1 takes place in following steps: Prophase 1 Prophase 1 is typically the longest phase of meiosis.

数分 1 按以下步骤进行：前期 1前期 1 通常是数分的最长时期。

These primary spermatocytes then go into meiosis I, and form two smaller haploid cells called secondary spermatocytes.

这些初级精母随后进入数分一期，形成两个较小的单倍体，称为次级精母。

In the second cellular division called meiosis II, the sister chromatids of a given chromosome are separated.

第二次分，也就是第二次数分后，每个染色体的姐妹染色单体分离。

Here are the distinct phases of meiosis: INTERPHASE MEIOSIS 1 CYTOKINESIS 1 MEIOSIS 2 CYTOKINESIS 2.

数分的不同阶段是：间期，数分 1，质分 1，数分 2，质分 2。

The four main steps of meiosis 2 are: prophase 2, metaphase 2, anaphase 2, and telophase 2.

数分 2 的四个主要步骤是：前期 2、中期 2、后期 2 和末期 2。

The oocyte then quickly completes meiosis II, leaving two daughter cells: the large ovum and a puny second polar body.

然后卵母迅速完成数分 II，留下两个子：大卵子和一个微小的第二极体。

Now we can go straight onto meiosis and the Kreb cycle.

现在我们可以直接进入数分和克雷布循环。

To put it simply, during meiosis, the process in which gametes[3] are created, chromosomal crossover occurs.

简而言之，在数分中， 即产生配子 [3] 的中，会发生染色体交叉。

To do this, the primary oocytes have to complete meiosis 1, and in a person's lifetime only about 400 successfully do that.

要变成配子就必须要经历第一次数分，而一个人的一生中大概只有400个初级卵母可以做到。

The secondary oocyte stops in metaphase of meiosis 2, and waits for fertilization as the menstrual cycle transitions into the luteal phase.

次级卵泡会在第二次数分中期停止分，并且在卵泡期向黄体期转换的时候等待受精。

Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information.

数分是一个分，单个分两次，产生四个，其中包含一半的原始遗传信息。

You'll remember from biology that gametes are haploid cells, meaning that they only have one set of chromosomes, and are formed by meiosis.

你会记得生物学中配子是单倍体，这意味着它们只有一套染色体，是由数分形成的。