Definitions for "Founder effect"
A process of evolution. Genetic differences between populations produced by the fact that genetically different individuals established (founded) those populations.
A high frequency of a particular allele in a population caused by it having been present in one or more members of a small number of individuals from whom the population is descended.
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.