All bdelloid rotifers are female, and they make embryos without any need for sperm.
所有的蛭形轮都是雌
,
牠们不需要精子就可以产生胚胎。
All bdelloid rotifers are female, and they make embryos without any need for sperm.
所有的蛭形轮都是雌
,
牠们不需要精子就可以产生胚胎。
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轮来说,大部份轮
行有
生殖,但是蛭形轮
已经把
丢开约一亿
。
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