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| male pregnancy ： ウィキペディア英語版 |
male pregnancy
Male pregnancy is the incubation of one or more embryos or fetuses by male members of any species. In nearly all heterogamous animal species, offspring are ordinarily carried by the female until birth, but in fish of the Syngnathidae family (pipefish and seahorses), males perform this function.〔(【引用サイトリンク】 title=Male pregnancy )〕 By some definitions of male identity, human men have done so in certain instances, and male humans incubating fetuses are a recurring theme in speculative fiction.
==Humans==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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