Tourist companies start visiting Island X,where the new colony of medium ground finches (see previous question)feeds on the tough-fruited Tribulus cistoides.The tourist companies set up reliable feeding stations with a variety of bird seeds (different types and sizes),so that tourists can get a better look at the finches.Which of these events is now most likely to occur to finch beaks on Island X?

Question

Quizplus · Accepted Answer

The reliable feeding stations with a variety of bird seeds will create a situation of abundant resources where different beak sizes and shapes have equal chances of success. This will lead to increased variation in beak size and shape over time in the medium ground finches on Island X. Option A and B are unlikely as they suggest directional selection, which is not expected in a situation with abundant resources. Option D is unlikely as the availability of more food sources may lead to changes in beak size and shape, as the finches may specialize in different types of food.

Tourist Companies Start Visiting Island X,where the New Colony of Medium