Question

Variation in gene frequencies within populations can occur rather than by natural selection. This is referred to as?
A) Genetic flow
B) Genetic drift
C) Random mating
D) Genetic load

Answer 1

Hint:Genetic variation in a population describes the existence in that population of different or elective structures, for a given quality. The presence of hereditary variety infers that people of the populace change in the alleles they have, implying that people contrast in genotype.

Complete answer:
Evolution of Populations: As per developmental hypothesis, each creature from people to creepy crawlies to plants to microorganisms share a typical progenitor. A large number of long periods of developmental weight made a few creatures kick the bucket while others endure, leaving earth with the differing life structures we have today. Inside this assorted variety is solidarity; for instance, all living beings are made out of cells and use DNA
Genetic Variation in Populations: A populace is a gathering of people that would all be able to interbreed, frequently recognized as animal types. Since these people can share qualities and give blends of qualities to the people to come, the assortment of these qualities is known as a genetic stock. The cycle of advancement happens just in populaces and not in people.
Natural Selection: Just as mutations cause new traits in a population, natural selection acts on the frequency that follows up on the recurrence of those attributes. Since there are a larger number of living beings than assets, all creatures are in a consistent battle for presence. In characteristic determination, those people with better qualities will be capable than produce more posterity.

Thus, the option (b) is correct.

Note:Natural selection is the gradual process that increases the frequency of advantageous Qualities permitting it to endure and duplicate and diminishes the recurrence of negative acquired characteristics inside a populace.