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动物界的性别,可以有多难以想象?
起初,这种现象被归咎于人为引入的污染,但更多证据表明,这种变化可能是两栖动物的自然现象。 铜头蝮(Agkistrodon contortrix)的雌蛇在特定情况下能够孤雌生殖,尽管这并不是常规理解中的“雌雄同体”,但这种独立进行生殖的能力在脊椎动物中是相对少见 ...
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