EVOLUTION
EVOLUTION OF A POPULATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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genetic drift
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gene pool
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natural selection
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speciation
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Detailed explanation-1: -Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time. These variations in the presence of alleles are measured as changes in allele frequencies.
Detailed explanation-2: -The frequency of alleles with the same fitness will change at random through time in a process called genetic drift.
Detailed explanation-3: -Genetic drift affects the genetic makeup of the population, but unlike natural selection, through an entirely random process. So although genetic drift is a mechanism of evolution, it doesn’t work to produce adaptations. Read more about: The mechanism of genetic drift, sampling error.