Generation-to-generation change in the allele frequencies in a population is _____.
A: macroevolution
B: mutation
C: microevolution
D: genetic drift
E: natural selection
Answer. C: microevolution
Micro evolution means the genetic changes in a population from generation to generation at the level of allele (altering). ‘Allele’ pronounce as a different version of a gene. Their abundance in a population can be changed due to the a lot of evolutionary forces. As genetic makeup of a population changes from one generation to the next, we have a process we call microevolution. One of the mechanisms that can lead to gene modifications is natural selection, in addition to other adaptive processes such as genetic drift, mutation and migration. Microevolution is the building-up of small alterations in the DNA material of the population that though are gradual, they represent the basis of the formation of new species and major evolutionary changes. It also is the founding mechanism of selection process that perpetrates developmental change and thus is a major foundation of population genetics and evolutionary biology as a science field.