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 ...

“It is the policy of the United States to recognize two sexes, male and female.” “‘Female’ means a person belonging, at ...

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

Men on TikTok are talking about trying to improve their sperm quality before they try for a baby with their partner. But it also gives a snapshot of their own health.

But just like Mendel and his peas don’t fully explain the actual complexity of genetic inheritance, simple definitions for ...

New research has resulted in the first high-resolution molecular picture of the equine endometrium—the inner lining of the ...

The female reproductive system includes internal and external organs, each designed to carry out varying functions. Learn ...

Generational wounds may live in our genes. New research suggests that childhood trauma leads to a difference in the epigenetics of a sperm cell, which can impact a child's development and also be ...

Understanding how cells transform into specialized types during human development is a central challenge in biology. This complex process, known as cell differentiation, holds the key to understanding ...

A significant proportion of infertility is due to altered gametogenesis, where the sperm and eggs produced are incompatible with fertilization ... Replication of this vector is synchronized with host ...

This cell (now with the genetic characteristics of an egg) can be combined with another spermatozoa to create a viable mouse embryo. That embryo is gestated by a mouse, and the mice that are born are ...

Similarly, a female same-sex couple could also have biological children, where one contributes eggs and the other pluripotent stem cells that end up producing sperm. Either of the two women could ...