It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

Official and unofficial teachings in The Church of Jesus Christ of Latter-day Saints, namely a belief in a premortal life, ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the ...

This process is known as insemination. The fertilization process occurs naturally when sperm enters the egg within a few ...

An NBC News analysis found hundreds of lawsuits over five years alleging that embryos were lost, destroyed or swapped by ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the University of Illinois ...

Syngenta Biotechnology China-led research, with partners in the U.S., France, the UK, Chile, the Netherlands, Argentina, and ...

Many women may not realise they have tubal factor infertility until they have trouble becoming pregnant because the illness ...

The church discourages artificial insemination or in vitro fertilization using sperm from anyone but the husband or an egg from anyone but the wife. However, this is a personal matter that is ...

Egg fertilization is often described as ... in all of this is actually the female reproductive tract." Sperm do swim during this process, but "the major movement is actually provided by ...