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 ...

The process of mammalian fertilization entails a finely orchestrated sequence of events whereby a capacitated spermatozoon navigates the female reproductive tract, binds to and penetrates the egg’s ...

Ascidian fertilization has long served as a tractable model for understanding fundamental mechanisms of gamete recognition, binding and fusion in chordates. Spermatozoa released into seawater are ...

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, a new study finds. The work ...