Answer:
The neutral theory of molecular evolution posits that most mutations are natural and most substitutions are beneficial.
Explanation:
According to the neutral theory, the great majority of genetic mutations have little to no effect on an individual's fitness. According to Motoo Kimura's neutral hypothesis, the bulk of molecular (DNA) mutations in a population occur as a result of genetic drift rather than natural selection, which suggests that mutations are generally neutral and therefore do not benefit the organisms.
This indicates that mutant alleles are really not kept because they have a selection benefit over other members of the population, but rather because of the unpredictability of existence. Neutral changes in genetic studies are those that occur when natural selection does not influence the distribution of the mutation within a species. Most other alleles of the gene will be deleted or replaced by neutral mutations that really are highly heritable and that are not connected to any genes that are currently being selected.
You can learn more at:
https://brainly.com/question/13261563
#SPJ4
