natural selection

noun

: a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment and that leads to the perpetuation of genetic qualities best suited to that particular environment

Examples of natural selection in a Sentence

Recent Examples on the Web

Darwin’s theory of evolution by natural selection, detailed in his 1859 book On the Origin of Species, became the foundation of modern evolutionary studies. —Leslie Katz, Forbes, 14 Jan. 2025

Darwin is most famous for his theory of evolution by natural selection. —Francesca Aton, ARTnews.com, 13 Jan. 2025

So begins The Voyage of the Beagle, Charles Darwin’s account of his trip around the coast of South America, between the islands of the Galápagos, and back to England—a journey that inspired his theory of evolution by natural selection. —Eli Wizevich, Smithsonian Magazine, 27 Dec. 2024

The Wonder of Nature The evolution of color in birds has been the focus of attention since Charles Darwin used them in outlining his theory of evolution by natural selection. —Simon Griffith, JSTOR Daily, 5 Dec. 2024

Word History

First Known Use

1842, in the meaning defined above

Kids Definition

natural selection

noun

: a natural process in which individuals or groups best adapted to the conditions under which they live survive and produce young and poorly adapted forms are eliminated

Medical Definition

natural selection

noun

: a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment and that leads to the perpetuation of genetic qualities best suited to that particular environment