A classic example of natural selection at work is the origin of giraffes’ long necks. The ancestors of modern giraffes were animals similar to deer or antelope, with necks of ordinary length.

This is because natural selection acts to increase the prevalence of highly advantageous alleles, over time generating common resistance alleles of especially strong effect. For example ...

"Horrific Behaviour Incredible Hulk 368 'Natural Selection'" delves into one of the most intense and morally complex issues of the Incredible Hulk comic series. In this issue, the Hulk faces ...

In natural selection, genetic mutations that are beneficial to an individual’s survival are passed on through reproduction. This results in a new generation of organisms that are more likely to ...