A physics-based sperm-screening technique could offer a more accurate at-home test for people trying to conceive ...

Katie Price has eggs from several donors who look like her and an American sperm donor so that she can have a sixth child that looks like her before she hits 50. The former glamour model and ...

Researchers have uncovered a "selfish" X chromosome in the fruit fly Drosophila testacea that manages to distort inheritance in both sperm and eggs. "But until now, we've only ever seen a ...

Eric Zhu, the 17-year-old who drew hundreds to the first-of-its-kind event, claims American men are experiencing an ...

All new babies start as an egg and a sperm, but where do those two cells come from in the first place? Your reproductive organs produce the sex cells that make a baby. Sperm cells begin their life ...

They succeeded in fertilising a normal egg using the nucleus of a cell taken from a male. Previously this has been thought impossible as cells have two sets of chromosomes, whereas sperm has only one.

In traditional surrogacy, the surrogate is genetically related to the baby, her egg is fertilised with the sperm of the intended father (or a donor), usually through artificial insemination.

Changes shown are growth spurts, body hair, strength, sperm production, egg release and hormones. The Let's Talk About Periods: Newsround Special explains menstruation. This film is relevant to ...

Researchers find that fat-rich fluid in the abdomen weakens immune defenses in advanced ovarian cancer, revealing new paths for treatment.

But most fish release thousands or even millions of eggs and sperm into the wide ocean and never see their offspring. When eggs hatch a day or two later, they’re on their own. Newly hatched fish ...

From forgetting people’s names to knowing the best time to retire, one professor and ageing expert reveals how to age well ...