What does founder effect mean?

Definitions for founder effect
founder ef·fect

Here are all the possible meanings and translations of the word founder effect.

Wiktionary

  1. founder effectnoun

    A lessening of genetic variation when the entire population in question descends from a small number of founders.

Freebase

  1. Founder effect

    In population genetics, the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population. It was first fully outlined by Ernst Mayr in 1942, using existing theoretical work by those such as Sewall Wright. As a result of the loss of genetic variation, the new population may be distinctively different, both genetically and phenotypically, from the parent population from which it is derived. In extreme cases, the founder effect is thought to lead to the speciation and subsequent evolution of new species. In the figure shown, the original population has nearly equal numbers of blue and red individuals. The three smaller founder populations show that one or the other color may predominate, due to random sampling of the original population. A population bottleneck may also cause a founder effect even though it is not strictly a new population. The founder effect occurs when a small number of migrants that are not genetically representative of the population from which they came establish in a new area. In addition to founder effects, the new population is often a very small population and so shows increased sensitivity to genetic drift, an increase in inbreeding, and relatively low genetic variation. This can be observed in the limited gene pool of Iceland, Faroe Islands, Easter Islanders and those native to Pitcairn Island. Another example is the legendarily high deaf population of Martha's Vineyard, which resulted in the development of Martha's Vineyard Sign Language.

U.S. National Library of Medicine

  1. Founder Effect

    A phenomenon that is observed when a small subgroup of a larger POPULATION establishes itself as a separate and isolated entity. The subgroup's GENE POOL carries only a fraction of the genetic diversity of the parental population resulting in an increased frequency of certain diseases in the subgroup, especially those diseases known to be autosomal recessive.

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Numerology

  1. Chaldean Numerology

    The numerical value of founder effect in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of founder effect in Pythagorean Numerology is: 2

Examples of founder effect in a Sentence

  1. Gregory Armstrong:

    The founder effect is a matter of a virus being in the right place at the right time.

Images & Illustrations of founder effect

  1. founder effectfounder effectfounder effectfounder effectfounder effect


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