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Founder effect


founder effect
a high frequency of a particular allele in a population founded by a small ancestral group when one or more of the founders was a carrier of that allele ...
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Founder Effect
Genetic Drift
Balanced Polymorphism
Polymorphisms
A polymorphism is a genetic variant that appears in at least 1% of a population.
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Founder effect
Genetic drift observed in a population founded by a small non representative sample of a larger population.
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founder effect The difference in gene pools between an original population and a new population founded by one or a few individuals randomly separated from the original population, as when an island population is founded by one or a few individuals; ...
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founder effect
A cause of genetic drift attributable to colonization by a limited number of individuals from a parent population.
fovea ...
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founder effect Changes in gene frequency that occur when a few individuals from a parental population colonize new habitats; the change is a result of founding individuals not having a representative sample of the parental population's genes.
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Founder effect
(
Sewall
Wright effect): A type of genetic drift in which allele frequencies are altered in a small population, which is a
nonrandom
sample of a larger (main) population.
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"The founder effect is probably responsible for the virtually complete lact of blood group B in American Indians, whose ancestors arrived in very small numbers across the Bering Strait during the end of the last Ice Age, about 10,000 years ago.
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The 'founder effect'
The field of biodiversity research has often been criticised for being overly defined by the personal interests of the founders (ie. terrestrial mammals) giving a narrow focus, ...
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This "sampling error" leads to the founder effect: rapid changes in allele frequencies in the colonizing population and divergence from the parent population.
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Changes in allele frequency that result because the genes appearing in offspring are not a perfectly representative sampling of the parental genes. (eg. in small populations). See also founder effect.
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Population bottlenecks can dramatically reduce genetic diversity by severly limiting the number of reproducing individuals and make inbreeding more frequent. The founder effect can cause rapid, ...
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