Just because a sperm is a strong swimmer doesn't necessarily mean it has the right amount of DNA, Dr. Lisa Lee told Newsweek.

If you look at a mouse sperm cell through a microscope, as postdoctoral researcher Kristin Hook did hundreds of times while working in Heidi Fisher’s lab at the University of Maryland, College Park, ...

Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are ...

TAF4b, a gonad-specific protein critical for mouse fertility, is not only required for long-term sperm production, but also plays a role in maintaining a population of spermatogonial stem cells, ...

Meiosis, as described above, is the process by which certain sex cells are created. If you're male, your body uses meiosis to create sperm cells; if you're female, it uses meiosis to create egg cells.

Meiosis, as described above, is the process by which certain sex cells are created. If you're male, your body uses meiosis to create sperm cells; if you're female, it uses meiosis to create egg cells.