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From Wikipedia, the free encyclopedia

In population genetics, a gene pool is the complete set of unique alleles in a species or population.


A large gene pool indicates extensive genetic diversity, which is associated with robust populations that can survive bouts of intense selection. Meanwhile, low genetic diversity (see inbreeding and population bottlenecks) can cause reduced biological fitness and an increased chance of extinction.

When all individuals in a population are identical with regard to a particular phenotypic trait they are known as monomorphic. When the individuals show several variants of a particular trait they are said to be polymorphic.

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Simple English

A gene pool is made of all possible variations of all genes of a population. Plants have a gene that says what colour their flower will be. Peas (at the origin) have either red or white flowers. That way the gene pool of peas includes the options to have red flowers and to have white flowers.


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