The proportion of well-adapted organisms in a population can increase over the generations by the process of evolution by natural selection.

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.

Darwin viewed evolution by natural selection as a very gradual mechanism of change within populations, and postulated that new species could be the product of this very same process, but over even ...

Natural selection is the process by which some organisms in a ... and is a crucial element of the theory of evolution. A classic example of natural selection at work is the origin of giraffes ...

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 ...

The early part of the twentieth century saw evolutionary theory embattled by disagreements over Darwin's emphasis on natural selection ... an uncomfortable fit with evolution, as many scientists ...

These findings offer new insights into how societal and economic factors continue to influence the course of human evolution.

It must be stressed that the neutral theory of molecular evolution is not an anti-Darwinian theory. Both the selectionist and neutral theories recognize that natural selection is responsible for ...

In fact, the process of natural selection feeds on randomness. It feeds on accident and contingency, and exploits that in ways that couldn't be predicted. It's still an inexorable process.

A strange tiny species of crustacean has challenged the way we think about natural selection and evolution ... variation Natural selection is the process by which certain traits become more ...