你知道，一个人所有的遗传信息都包含在一个叫做染色体的长 DNA 片段上。

You know that all of a person's genetic information is contained on very long pieces of DNA called Chromosomes.

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当每次染色体分裂时——即当每次一个细胞分裂成两个时——染色体的尾部，也就是端区，就会发生断裂。

Every time the Chromosome divides—every time one cell divides into two—pieces of the ends of the Chromosome, the telomere, get broken off.

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无论如何，如果我们检查这些螺旋状 DNA 的末端，我们会发现每条人类染色体的末端都有一个被称作“端粒”的 DNA 序列。

Anyway, if we examine these ends of these coils of DNA, we will find a sequence of DNA at each end of every human Chromosome, called a telomere.

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Has only half of the diploid chromosomal content that most of the cells, which are called somatic cells in our body have.

卵子中只含有我们机体一半的染色体,二倍体基因组中一半的染色体,这些二倍体细胞称为体细胞

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It separates those duplicated chromosomes to two sides of the cell, physically separates them, and the cell itself pinches off to form two new cells.

双倍化的染色体,被分别拉向细胞的两边,物理性的分离了,细胞本身中央凹陷形成两个新细胞

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You're not fishing through a whole chromosome in order to find what you want, but you're going to a cell that's already enriched in it.

你不是大海捞针地,在一整个染色体中找基因,而是在一个充满了,你感兴趣的基因的细胞里找

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