What type of selection might occur in a population of beetles after a new predator is introduced into an ecosystem? . select one from the choices given: a. . gradualism . .b. . punctuated equilibrium c. . convergent . . . . d. . adaptive radiation .

Punctuated equilibrium might occur in a population of beetles after a new predator is introduced into an ecosystem. Punctuated equilibrium is the hypothesis that evolutionary development is marked by isolated episodes of rapid speciation between long periods of little or no change.

The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

B. punctuated equilibrium

Explanation:

Punctuated equilibrium refers to the process of evolution in a relatively short time span after a long period of stability. Punctuated equilibrium leads to abrupt changes in population and the sudden appearance of new species as proved by fossil records.  

Introduction of a new predator in a population of beetles would stimulate natural selection to favor the beetles with some adaptive genetic variations giving them a survival advantage. These naturally selected beetles would leave more progeny. This sudden appearance of a new beetle population with individuals having adaptive traits against the introduced predator represents punctuated equilibrium.