Darwin thought that evolution took place over hundreds or ... The Grants had documented natural selection in action. While beak size is clearly related to feeding strategies, it is also related ...

They have done nothing less than witness Darwin's theory of evolution unfold before their eyes. That would have stunned Darwin, who thought natural selection operated over vast periods of time and ...

Studies have suggested that genes under strong sexual selection tend to evolve rapidly, particularly those associated with ...

As conditions change, so does life. It evolves. Evolution is driven by a process called natural selection. And there's no better place to see how it works than in the forests of Madagascar.

In this scenario, the deleterious allele will remain at an intermediate equilibrium frequency that reflects the balance between gene flow and natural selection. The common conception of evolution ...

Natural selection is a mechanism of evolution—not evolution itself. "Natural" refers to how traits are passed on without intentional outside interference. (In contrast, "artificial selection" is ...

Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes ...