Tourist companies start visiting Island X,where a population of medium ground finches (see question 20)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

With the introduction of a variety of bird seeds, it is likely that the finches will have access to a wider range of foods with varying hardness and textures. This may lead to increased variation in beak size and shape over time as the finches adapt to different types of seeds. However, it is unlikely that all birds will evolve towards the same beak size or shape as there may be different selective pressures acting on different subpopulations of finches.

Tourist Companies Start Visiting Island X,where a Population of Medium