Beneficial mutations happen quite frequently, but the world changes too fast for them to stick.

Add Yahoo as a preferred source to see more of our stories on Google. Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell ...

Since time immemorial, humankind has wondered about its lineage: where it came from and how it got here. Modern science has ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a ...

Tracks left by some of the earliest complex animals are giving new insights into how they experienced the world. New research ...

Typically, the information encoded in DNA allows organisms to develop, function, and pass traits across generations. Yet DNA ...

Humans take nearly 18 to 25 years to reach full maturity, far longer than most mammals. This slow human growth is driven by ...

Today, biologists taking a closer look at the animals located inside the Chernobyl Exclusion Zone (CEZ), which is about the size of Yosemite National Park, and investigating how decades of radiation ...

In five cases where vertebrates evolved monogamy, the same changes in gene expression occurred each time. In many non-monogamous species, females provide all or most of the offspring care. In ...

"This book was originally published as an issue of Philosophical transactions of the Royal Society B; Biological sciences (volume 363; number 1496) but has been materially changed and updated"--Title ...

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide to ...