Sexual reproduction is the production of a new organism from two parents by making use of their sex cells or gametes. In this process male gametes fuses with a female gamete to form a new cell called ...

Genetic diversity is essential to the survival of a species. It's easy enough to maintain if a species reproduces sexually; an egg and a sperm combine genetic material from two creatures into one, ...

A fully formed crocodile fetus has been found in an egg laid by a female that had no contact with males – showing for the first time that “virgin birth” is possible in these animals. The female fetus ...

Editor’s Note: Aarathi Prasad is a London-based biologist and science writer and the author of “Like a Virgin: How Science is Redesigning the Rules of Sex”. In an article in the UK’s “traditional ...

"Female mosquitoes have to carefully manage energy and nutrients to produce eggs, and if that process is disrupted, ...

A University of Michigan-led study based on a review of genetic and health information from more than 276,000 people finds strong support for a decades-old evolutionary theory that sought to explain ...