Natural selection | Definition & Processes | Britannica
Dec 5, 2025 · natural selection, process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution.
Natural selection - Wikipedia
It is a key law or mechanism of evolution which changes the heritable traits characteristic of a population or species over generations. Charles Darwin popularised the term "natural selection", contrasting it …
What is natural selection? - Natural History Museum
In Darwin and Wallace’s time, most believed that organisms were too complex to have natural origins and must have been designed by a transcendent God. Natural selection, however, states that even …
Natural Selection - Understanding Evolution
Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. Darwin’s grand idea of evolution by natural selection is relatively simple but often …
Natural Selection: Definition, Theory, Types & Examples
Oct 29, 2024 · Natural selection is the process whereby organisms better adapted to their environment tend to survive, pass on the genes, and produce more offspring. It is a mechanism of evolution that …
Natural Selection - National Geographic Society
May 7, 2025 · Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some …
NATURAL SELECTION Definition & Meaning - Merriam-Webster
Dec 22, 2025 · The meaning of NATURAL SELECTION is a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment and that leads …
What Is Natural Selection and How Does It Work?
Apr 21, 2025 · Natural selection is the fundamental engine of evolution, sculpting the living world with quiet, relentless power. It is not a force that demands attention, but one that works behind the …
NATURAL SELECTION Definition & Meaning | Dictionary.com
By natural selection, any characteristic of an individual that allows it to survive to produce more offspring will eventually appear in every individual of the species, simply because those members will have …
Natural Selection - Definition, Principles, Process, Types, & Examples
Nov 10, 2023 · Natural selection is the adaptation strategy of living organisms on Earth. It occurs when they acquire and evolve a trait with time that provides them a distinct advantage for their survival and …