EVOLUTION
EVOLUTION OF A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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stable allele frequencies.
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changing allele frequencies.
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stable phenotype frequencies.
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changing phenotype frequencies.
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Detailed explanation-1: -Microevolution is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift.
Detailed explanation-2: -Microevolution is defined as changes in the frequency of a gene in a population. These are subtle changes that can occur in very short periods of time, and may not be visible to a casual observer.
Detailed explanation-3: -Genetic drift is change in allele frequencies in a population from generation to generation that occurs due to chance events. To be more exact, genetic drift is change due to “sampling error” in selecting the alleles for the next generation from the gene pool of the current generation.
Detailed explanation-4: -Macroevolution involves variation of allele frequencies at or above the level of a species, where an allele is a specific iteration of a given gene. It is an area of study concerned with variation in frequencies of alleles that are shared between species and with speciation events, and also includes extinction.