Examlex
What is the primary function of insulin?
Genetic Drift
A mechanism of evolution involving random fluctuations in the frequency of alleles within a population, which can cause genetic variation to decrease over time.
Bottleneck
A sudden decrease in a population size caused by adverse environmental factors; may result in genetic drift; also called genetic bottleneck or population bottleneck.
Directional Selection
A type of natural selection that favors one extreme phenotype over another, causing the allele frequency to shift in one direction.
Disruptive Selection
A form of natural selection where extreme values for a trait are favored over intermediate values, potentially leading to the evolution of distinct forms within a population.
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