Take a lineage of microscopic marine animals known as bdelloid rotifers.Most rotifers reproduce sexually, but bdelloid rotifers abandoned sex about 100 million years ago.
就拿海洋中
微小动物蛭
来说，大部份行有性生殖，但是蛭已经把性丢开约一亿年了。
先;先
,
传下来;，先;先;;族;;Take a lineage of microscopic marine animals known as bdelloid rotifers.Most rotifers reproduce sexually, but bdelloid rotifers abandoned sex about 100 million years ago.
就拿海洋中微小动物蛭来说，大部份行有性生殖，但是蛭已经把性丢开约一亿年了。
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