Reproduction in the animal kingdom has historically been sexual. Cloning the sheep Dolly in 1997 moved us closer to the possibility of duplicating other animals or humans asexually, but the practice ...

Two captive female California condors each produced a chick asexually years ago – the only such instances ever recorded for that endangered species, researchers reported Thursday. And while this has ...

For years scientists have known that some species of sharks, fish and lizards are capable of "virgin births," asexual reproduction known as parthenogenesis that occurs when unfertilized eggs develop.

In the animal kingdom, reproduction is a necessary part of species survival. Parthenogenesis, a form of asexual reproduction where embryos develop from unfertilized eggs, has been observed in captive ...

Parthenogenesis is a natural form of asexual reproduction in which growth and development of embryos occurs without fertilization by sperm. The San Diego Zoo Wildlife Alliance on Thursday announced ...