In most developing tissues, signals called morphogens act like lighthouses, guiding nearby cells toward their fate and ...

New research challenges the long-standing idea that most fixed genetic mutations are neutral. For many years, scientists studying evolution have believed that most genetic changes influencing how ...

Animals from completely different branches of the tree of life, such as insects, worms and vertebrates, independently evolved ...

Studying the ways that magenta and yellow flowers intermingle paints a vibrant picture of how the plants exchange genetic ...

Researchers found that ancient hominids—including early humans—were exposed to lead throughout childhood, leaving chemical ...

The present theory offers a unified solution to three closely related evolutionary problems. (1) Why does an evolving population explore only a small fraction of the accessible pathways in genotype ...

How much influence did humans really have on the enormous variety of today’s dog breeds? An analysis of dog skulls from the last 50,000 years brings surprising insights to light: As early as 11,000 ...

There is a good chance that many of you watching right now have a dog somewhere nearby. But what do you actually know about where dogs come from? You're probably aware they evolved from wolves, but ...

Adaptive responses to autocorrelated environmental fluctuations through evolution in mean reaction norm elevation and slope and an independent component of the phenotypic variance are analyzed using a ...

At the mercy of natural selection since the dawn of life, our ancestors adapted, mated and died, passing on tiny genetic mutations that eventually made humans what we are today. But evolution isn't ...