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Birds can have beaks that range from small to large. Birds with large beaks are better able to crack hard seeds, while birds with small beaks have an easier time eating small seeds.

Which situation would cause directional selection toward birds with larger beaks?

A. New predators move into the region and target all birds.
B. A wildfire wipes out trees and allows grasses with small seeds to regrow.
C. A very rainy season leads to the growth of many different types of fruit.
D. A drought kills grasses, and only hard seeds from trees remain.

Sagot :

GinnyAnsweridn

Final answer:

Birds with larger beaks are favored in scenarios where hard seeds are the main food source, leading to directional selection and an increase in beak size over generations.


Explanation:

Directional selection toward birds with larger beaks would occur in scenario D, where a drought kills grasses, leaving only hard seeds from trees. In this situation, birds with larger beaks, better equipped to crack hard seeds, would have a higher chance of survival and reproduction, leading to an increase in average beak size in the finch population over time.


Learn more about Natural Selection here:

https://brainly.com/question/4075522


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