Modern genetics reveals that over 50 genes across many chromosomes—not just X and Y—govern sex development. The term “sex ...

Medal of Honor recipient Sgt. Dakota Meyer, a father of two daughters, joined the fight to protect women’s sports on Monday by partnering with XX-XY Athletics. Meyer joined the company as the ...

Doctors discovered a woman had "blood chimerism" after examining the chromosomes of cells from different parts of her body.

Most species on Earth exist as two biological sexes, and the exchange of genes between males and females is vital for their ...

EXCLUSIVE: Former U.S. women's Olympians MyKayla Skinner and Nancy Hogshead have signed with the activist sportswear brand XX-XY Athletics, aligning themselves with the mission to advocate for the ...

Each human cell contains 23 pairs of chromosomes that carry DNA within their nucleus. The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Erika Rasure is globally-recognized as a ...

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