Question

i have a brainliest! help!!!
Henry was studying two populations of the same species of lizards. One population lived on an island and the other lived on the mainland. Both populations were affected by a hurricane that hit the island and the mainland with equal force. A year later, Henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. Which best describes a conclusion he might have reached?

Gene flow greatly affects small populations, but large populations can recover. Genetic drift greatly affects small populations, but large populations can recover. Gene flow greatly affects large populations, but small populations can recover. Genetic drift greatly affects large populations, but small populations can recover.

Answer 1

Genetic drift greatly affects small populations, but large populations can recover.

Answer 2

The correct answer is option B, that is, Genetic drift greatly affects small populations, but large populations can recover.  

Genetic drift in combination with mutation, natural selection, and migration is one of the most fundamental mechanisms of evolution. Genetic drift refers to a change in the relative frequency of distinct genotypes in a small populace, owing to the chance vanishing of specific genes as individuals do not reproduce or die.