Question

What is true of microevolution?

A. It is evolution that is restricted to individual organisms.
B. It is the kind of evolution that can change the relative abundance of a particular allele in a gene pool over the course of generations.
C. It is evolution that influences only a small subset of the populations that comprise a species.
D. It is evolution that results in the origin of small numbers of new species. It is evolution that involves only tiny changes to DNA, such as point mutations, producing only small (if any) changes to phenotype.

Answer 1

Answer:

B. It is the kind of evolution that can change the relative abundance of a particular allele in a gene pool over the course of generations.

Explanation:

Microevolution small changes in allele frequency in a population. Its effects can be seen in short periods, even from one generation to the next one generation, when these microevolution changes accumulate they can lead to macroevolution.

The processes that result in microevolution are

• Gene Flow: Is the transfer of variations of a gene from one population to another, generally of the same species.
• Mutation: A random alteration of a gene, occurs rarely and it's the source of new alleles. They can benefit or be harmful.
• Genetic drift: Its the random possibility of an allele to become less or more numerous in a population, this can lead to the fixation or loss of this allele.
• Selection: It depends on the adaptative advantage of certain traits

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