Question

Although each of the following has a better chance of influencing gene frequencies in small populations than in large populations, which one most consistently requires a small population as a precondition for its occurrence? mutation nonrandom mating genetic drift natural selection gene flow

Answer 1

Genetic drift

Step-by-step explanation:

Genetic drift is the process which leads to the drift or shift of the evolving genes from one direction to another and directly affects the evolution.

The genetic drift changes the gene pool of the population is a short period of time due to a sudden event which is not controlled by nature therefore the process is considered a random process.

Since the natural event suddenly changes the gene pool, therefore, the event must act on the small population as the large population cannot be affected by the same natural event at the same time.

Thus, genetic drift takes place in the small population and thus genetic drift is the correct answer.

drift in the gene pool occur due to sudden events therefore the process must take place in tyhe

Answer 2

genetic drift

Step-by-step explanation:

Genetic drift is an evolutionary force that requires the presence of a small population. It is a random process that fixes one or other alleles randomly in the gene pool of a population. Genetic drift does not take account of survival fitness imparted by alleles to the individuals. Since random and chance events such as the death of all the individuals having a certain allele in a population affect the small population more intensely, genetic drift works on small populations only.