Question

a new pesticide has been introduced to the habitat of this population of beetles. which describes the effect of this environmental change? decreased genetic variation increased genetic variation genetic drift gene flow

Explanation:

When a pesticide is introduced, it acts as a selective pressure. The beetles that are not resistant (in this case, the white - colored beetles) are likely to be killed. This reduces the number of different genetic types (since the white - beetle genes are removed from the population). Genetic variation is the number of different genetic traits in a population. With fewer types of beetles (less genes), genetic variation decreases.

Answer:

decreased genetic variation