Iron deficiency during pregnancy can cause a male mouse embryo to develop female features, a new study reveals. The low iron disrupts the activation of a key gene that spurs the development of male ...

IMANE KHELIF has issued a response after a leaked medical report claimed the gold medal-winning Olympian is a “biological male”. Khelif, 26, won Algeria’s first-ever female gold ...

Old female mice had more PLP1 in the hippocampus than old male mice, suggesting that the extra PLP1 from the second X chromosome had made a difference. To test whether PLP1 could explain the ...

More information: Margaret Gadek et al, Aging activates escape of the silent X chromosome in the female mouse hippocampus, Science Advances (2025). DOI: 10.1126/sciadv.ads8169 ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and ...

Claims spread that definitions of "male" and "female" included in a January 2025 executive order that asserted sex is established at conception accidentally classified all Americans as women. The ...

Per reports, it is rare for a biological male Calico Cats to have two chromosomes, as only 1 in every 3,000 has XXY chromosomes. As such, Josie is indeed a very special cat.

Washington, D.C. Newsroom, Aug 1, 2024 / 16:46 pm An Algerian boxer with male chromosomes defeated an Italian woman boxer in an Olympics boxing match on Thursday after landing a devastating punch ...

An Algerian boxer with male chromosomes defeated an Italian woman boxer in an Olympics boxing match on Thursday after landing a devastating punch to the woman’s face in the brief 46-second fight.

Dr Lister says: “In female mammals, such as humans and mice, XX females and XY males have different numbers of the X chromosome. To balance this difference, one of the X chromosomes in females is ...