Let's say a set of identical twin brothers marry identical twin sisters. These two couples have children. Would their children be genetic "siblings"?

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 female crocodile living in isolation made herself pregnant in what is being hailed as the first known instance for the species. In findings that stunned scientists, the offspring was found to be ...

These mice were genetically identical, so any differences in methylation had to come from epigenetic factors. Global DNA study identifies 175,000+ variants affecting human diversity and disease risk ...

Over twenty years ago, scientists noticed something unusual while studying a mouse strain called agouti viable yellow, or Avy. Some of these genetically identical mice became yellow and obese, while ...