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Merry Christmas

All of us at Scope wish you a Merry Christmas! To get you into the holiday spirit, please enjoy the classic "Christmas in Hollis" by RUN-DMC. I think it's one of the all-time great Christmas songs (and it neatly extends this year's hip-hop holiday theme on Scope).

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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.