只需要多几次这类切除，就能达到带有单一环状线粒体祖先全部功能性基因的18条微型染色体。
It would take just a few more excision events to arrive at 18 mini chromosomes with all the functionality of their single-circle ancestor.
她们在1982年发表的此项结果相当令人震惊：CCCCAA序列似乎停止了微型染色体的降解。
The results, which they published in 1982, were astounding: the CCCCAA sequence appeared to stop the minichromosomes from degrading.
当这些微型染色体注入到酵母细胞中后，在细胞分裂时，这种CCCCAA的DNA序列在复制时对染色体起到了保护作用，就像鞋带末端的塑料帽对鞋带起到的防磨损作用。
When these were injected into yeast, the DNA sequence protected the chromosomes when they were copied, just as the plastic tips at the ends of shoelaces stop them from fraying.
细胞用来分离染色体的精细机器，是由成千上万被称为微管的微型管状组织组装而成的。
Hundreds of tiny tube-like structures, called microtubules, make up the machinery that cells use to separate the chromosomes.
细胞用来分离染色体的精细机器，是由成千上万被称为微管的微型管状组织组装而成的。
Hundreds of tiny tube-like structures, called microtubules, make up the machinery that cells use to separate the chromosomes.
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