Two frog populations (same species)living in two neighboring lakes sing slightly different courtship songs.Predict what likely happens to the songs of the two frog populations after increased irrigation makes the land between the two lakes wetter.Females prefer loud frogs to quieter frogs,but do not distinguish between the two slightly different songs.Assume that courtship song differences have a genetic basis.
A)The songs become more similar to each other.
B)The songs become more different from each other.
C)There is no change in the frog courtship songs of the two lakes.

Question

Quizplus · Accepted Answer

Increased irrigation will make it easier for the two frog populations to come into contact with each other. As female frogs prefer loud males, there will be a selective pressure for both populations to become louder. As the courtship song differences have a genetic basis, it is likely that the genes responsible for producing louder songs will become more common in both populations. This will lead to the two populations' courtship songs becoming more similar to each other over time.

Two Frog Populations (Same Species)living in Two Neighboring Lakes Sing