Male pregnancy - Wikipedia
https://en.wikipedia.org/wiki/Male_pregnancy
Some science fiction writers have picked up on these issues, in "cross-gender" themes—e.g., Octavia E. Butler's Bloodchild and Other Stories. Ursula K. Le Guin's novel The Left Hand of Darkness contains the sentence "The king was pregnant", and explores a society in which pregnancy can be experienced by anyone, since individuals are not sexually differentiated during most of their life and can become capable of inseminating or gestating at different times. Lois M…
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