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founder effect

American  

noun

Biology.
  1. the accumulation of random genetic changes in an isolated population as a result of its proliferation from only a few parent colonizers.


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In isolated populations like Sardinia’s, where inbreeding was common, such rare variants can become more frequent, a phenomenon called the founder effect.

From Science Magazine Nov. 20, 2024

The founder effect is an event that kills off a significant proportion of a population, generating an allele frequency which is not typical of the original population.

From Textbooks Jun. 9, 2022

The founder effect is when a few individuals in a population are separated from the original population.

From Textbooks Jun. 9, 2022

However, the bottleneck effect reduces or eliminates alleles within a population, whereas the founder effect introduces or increases alleles.

From Textbooks Jun. 9, 2022

Both the bottleneck and founder effect are examples of gene flow.

From Textbooks Jun. 9, 2022

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