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Genetic archaeology offers clues to backstory of male pregnancy

A bit of genetic archaeology is giving clues to one of the greatest gender bending mysteries in the world of fish: How did a family of fish come to embrace male pregnancy?A new gene discovered in the gulf pipefish hints that an old gene busy with kidney and liver function may have learned new tricks in the male womb, said April Harlin-Cognato at Michigan State University in the Proceedings of the National Academy of Sciences.

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