Which of the following terms refers to the phenomenon by which an allele becomes so common that every individual in a given population has it?

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Fixation refers to the point at which an allele becomes so common in a population that every individual has it. This can occur through genetic drift, natural selection, or other mechanisms. Fitness refers to an organism's ability to survive and reproduce in a given environment. Saturation and imprinting do not refer to this specific phenomenon.

Which of the Following Terms Refers to the Phenomenon by Which