Natural Selection

Pronunciation
/NA-chuh-l SEHL-ek-shun/
Category
Evolution

Definition

The process by which individuals with traits better suited to their environment survive and reproduce more successfully than those less suited. This leads to the gradual change in the frequency of these advantageous traits within a population over time.

Etymology

Coined by Charles Darwin and Alfred Russel Wallace, based on the idea that nature 'selects' for traits that enhance survival and reproduction.

Example

The long necks of giraffes are an example of natural selection. Giraffes with longer necks can reach higher leaves, giving them a survival advantage during times of food scarcity.

Related Terms