Caitlyn Jenner said XY chromosomes give lasting athletic advantages and voiced support for the IOC’s move to restrict transgender women’s eligibility ...

Earlier this year, the often overlooked issue of differences in sex development came to the fore after two women boxers were allowed to compete in the Olympics after previously failing a gender ...

Sex determination at birth is decided on the chromosomes the baby has. A female has two X chromosomes, whereas a male has one X and one Y chromosome. According to Medline Plus, in every cell, humans ...

Riley Gaines is one of the most prominent figures to speak out against the gender controversy in the Olympic boxing competition. Algerian boxer Imane Khelif advanced to the women's 66-kilogram ...

Political outrage surrounding two women competing in boxing at the Paris Olympics stems from "a lot of misinformation," an International Olympics Committee spokesperson said Friday. It all began when ...

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 ...

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

People with an XY chromosome combination have more physical strength (especially upper body strength) than people with an XX chromosome combination. Title IX was designed to allow people with an XX ...