founder effect


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founder effect

n.
A random difference in allele frequencies of a population founded by a small group of organisms relative to the allele frequencies in the original population.
References in periodicals archive ?
Theidentification of the same variant in CTSK as identified in other families from Pakistan suggests that it is common due to a founder effect.
The scientists then looked at something called the founder effect.
Mutational spectrum of the TYR and SLC45A2 genes in Pakistani families with oculocutaneous albinism, and potential founder effect of missense substitution (p.
edu/evolibrary/article/bottlenecks_01) founder effect " noticed in species that inhabit and colonize a new environment, humans will also adapt to the conditions on the red planet.
Invasive species are predicted to suffer from reductions in genetic diversity when only a few individuals from the source population colonize new habitats, thus undergoing the founder effect and reducing adaptive potential (Mayr, 1963; Allendorf & Luikart, 2007).
In a process known as the serial founder effect, populations closer (via land migration routes) to modern-day Ethiopia, where the earliest evidence of Homo sapiens has been found, had higher levels of genetic diversity than groups that settled farther away.
Likewise, there has been improved understanding of the distributions of plants and animals, especially endemism in island biotas where the founder effect is significant.
We believed that the island bees would show evidence of the founder effect, or random genetic changes in an isolated population, on a unique sex determination gene from the mainland bees," he said.
Maternal lineage studies of mtDNA haplotype sequences were used to identify a founder effect, defined as the establishment of a new population by a few original founders (in an extreme case, by a single fertilized female) carrying only a small fraction of the total genetic variation of the parental population.
This is known as founder effect and can be observed in geographically isolated areas and among populations that practice intermarriage based on circumstances, customs, beliefs or economics.