isolated populations

When A Geographic Barrier Isolates A Population For So Long They Become Different Species?

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When A Geographic Barrier Isolates A Population For So Long They Become Different Species? When a geographic barrier isolates a population for so long they become different species? Allopatric speciation refers to the process by which a physical barrier separates a single population, causing two (or more) populations to arise and evolve due to environmental

Does Genetic Drift Occur In All Populations?

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Does Genetic Drift Occur In All Populations? Does genetic drift occur in all populations? Genetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance (sampling error). Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations. In which