A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

This valuable study reports on the critical role of ANKRD5 (ANKEF1) in sperm motility and male fertility. However, the supporting data remain incomplete. This work will be of interest to biomedical ...

Transgender adults deserve the freedom to live their lives in whatever way makes them happiest. However, activists cannot demand that we deny basic reality and expect us to go along with it.

The U.S. Department of Health and Human Services said Wednesday that the agency has issued guidance recognizing only two ...

The U.S. Department of Health and Human Services issued guidance updating its official definitions of terms such as sex, ...

A single gene in the shorebird species known as ruffs controls the levels of testosterone in males, and this in turn affects ...

Reproductive biology involves the scientific study of the reproductive system. Improved understanding of reproductive biology can lead to new treatments for reproductive disorders, such as ...

The first month of President Trump’s second administration began with a flurry of Executive Orders, many of which directly affect various ...

Domestic cats are sterilized via ovariohysterectomy, but this procedure is not feasible for the larger population of free-roaming cats. Here they show that injecting high levels of anti-Müllerian ...

Jan. 23, 2025 — Researchers have uncovered which genes on the Y chromosome regulate the development of sperm and impact fertility in male mice. This research could help us understand why some ...

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As the MDGs era comes to a conclusion with the end of the year, 2016 ushers in the official launch of the bold and transformative 2030 Agenda for Sustainable Development adopted by world leaders ...