So those bacteria, along with the environmental bacteria, free water and oxygen, actually break apart the DNA into smaller and smaller and smaller DNA fragments, until all you have are fragments that range from 10 base pairs to, in the best case scenarios, a few hundred base pairs in length.
因此那些细菌，和其他环境细菌 游离水和氧气，其实会将DNA分解 分解成更小的DNA片段 这些片段分布不均 小的才有10对碱基对，最好的情况下 也只有几百对碱基对