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.

The neo-Darwinist attachment to Natural Selection has arrested the development of science for too long.

Note that this change was not due to pollution making the moths darker. The dark variety had always existed in small numbers, but only had a selective advantage when the selection pressure changed.

For example, if heterozygotes at a locus have higher fitness than homozygotes (a scenario known as heterozygote advantage or overdominance), natural selection will maintain multiple alleles at ...

For example, dominant male red deer monopolize ... and that therefore do no reinforce the effects of natural selection. If females evolve a preference for a particular trait, males bearing that ...

unpredictable fray of natural selection. With two partners combining varied genes, a species has more flexibility to adapt to changing environments. There are, however, rare examples of asexual ...

The phrase "survival of the fittest" functions principally in evolutionary theory to describe the biological concept of natural selection. English naturalist, geologist, and biologist Charles ...

Multilevel selection is a controversial concept originally proposed by Darwin. A new study found evidence for it in the wild in a group of marmots scientists have been observing for more than 60 years ...

He revolutionaised the field of natural history from his theory of natural selection. His book named "The Origins of Species" was published in 1859, where he argued that all present-day life forms ...

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 ...

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