回溯到那时候，线粒体(细菌)还没象今天我们看到的这样全然地改变了染色体的面貌，但正常的细菌染色体有几千个基因。
Back then, the mitochondria didn't have stunted genomes as they do today, but normal bacterial chromosomes with several thousand genes.
回溯到那时候，线粒体(细菌)还没象今天我们看到的这样全然地改变了染色体的面貌，但正常的细菌染色体有几千个基因。
Back then, the mitochondria didn't have stunted genomes as they do today, but normal bacterial chromosomes with several thousand genes.
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