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.
就拿海洋中的微小动物蛭形
来说，大部
行有性生殖，但是蛭形已经把性
开约一亿年了。
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.
就拿海洋中的微小动物蛭形来说，大部行有性生殖，但是蛭形已经把性开约一亿年了。
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