Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Ideas about how the female ...

Add Yahoo as a preferred source to see more of our stories on Google. The first mice to be created from two fathers, a phenomenon known as androgenesis, have now produced healthy offspring for the ...

An egg cell and a sperm need to hold together tightly in the Fallopian tube in order to fuse, resulting in the creation of a new organism. One key part of this process involves the proteins Juno, on ...

How a sperm and an egg fuse together has long been a mystery. New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal ...

After the egg has been fertilized by a sperm, the surrounding egg coat tightens, mechanically preventing the entry of additional sperm and the ensuing death of the embryo. This is according to a new ...

When analyzing spermatozoa in semen microscopy, several parameters are assessed to evaluate male fertility and reproductive ...

A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...

But methyl groups aren’t easily passed to the next generation: Fertilized eggs erase most of these marks from both sets of ...