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Happy New Year

Tonight we wish you a very Happy New Year! We'll be back on Jan. 3 to greet you, when we resume our regular publishing schedule.

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Category:
Genetics
Sex biology redefined: Genes don’t indicate binary sexes

The scenario many of us learned in school is that two X chromosomes make someone female, and an X and a Y chromosome make someone male. These are simplistic ways of thinking about what is scientifically very complex.