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, ...

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 ...

Ads. Tinder. "Game of Thrones." Flowers in a garden. But just because we see it everywhere doesn't mean that we can definitively explain why it's everywhere. Sexual reproduction is a costly endeavor: ...

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 ...

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 ...

Not all species need sperm to fertilize an egg for sexual reproduction. Some species need sperm in order to induce completion of egg nucleus development, but then never use the sperm’s DNA. I describe ...