无性时代
无性繁殖
非性
This asexuality seems to have arisen only once, yet biology recognises about 380 species of bdelloid.
ECONOMIST: Evolution
They have found a species of crayfish that follows the logic of asexuality and does, indeed, clone itself.
ECONOMIST: Asexual reproduction
词根：asexual
adj.
asexual[生物] 无性的；无性生殖的
adv.
asexually无性地；无性生殖地
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