Genetic drift

Genetic drift is a mechanism of evolution. It refers to random fluctuations in the frequencies of alleles from generation to generation due to chance events.

Genetic Drift: Random changes in allele frequency, which usually occurs in small populations.

Microevolution is simply a change in gene frequency within a population. Evolution at this scale can be observed over short periods of time — for example, between one generation and the next, the frequency of a gene for brown coloration in a population of beetles increases. Such a change might come about because natural selection

Genetic drift is a mechanism of evolution responsible for random changes in a population. It helps in the process of speciation and evolution

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The underlying premise of this Equilibrium is that, in a large population with random mating and lack of additional factors like genetic drift, mutation, and natural selection the frequencies of certain genes tends to remain constant from one generation to another.

Human genetic variation particularly in Africa is still poorly understood. This is despite a consensus on the large African effective population size compared to populations from other continents. Based on sequencing of the mitochondrial Cytochrome C Oxidase subunit II (MT-CO2), and genome wide microsatellite data we observe evidence suggesting the effective size (Ne) of humans to be larger than the current estimates, with a foci of increased genetic diversity in east Africa, and a…

What is the difference between Gene Flow and Genetic Drift? Gene flow works on more than one populations at once; genetic drift works on small populations.