45.5k views
3 votes
A balanced polymorphism exists through disruptive selection in ground finches from the Galapagos in which small- and large-billed birds specialize in cracking soft and hard seeds, respectively. If long-term climatic change resulted in all seeds becoming soft, what type of selection would then operate on the finch population?

1 Answer

6 votes

Answer:

The correct answer is - directional selection.

Step-by-step explanation:

In a population, if a particular phenotype is favored among all others in every individual by continuously shifting the allele frequency towards one direction only, this type of selection called directional selection. It is a mode of natural selection.

In this case, the finch population will change towards the directional selection due to the food source become similar for both small and large-billed due to climatic change in the long term all seeds become soft so the small billed will be more favored.

User Danielpiestrak
by
8.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.