Question

question 4 of 25
why would a finch population that lives on an island have a higher rate of
speciation than a finch population that lived in a large forest in north
america?
a. the island finches have more gene flow.
b. the island finches have more behavioral isolation.
c. the island finches will mutate more frequently.
d. the island finches have less geographical isolation.

Explanation:

On an island, finches may have more opportunities for unique behaviors due to limited space and resources. Behavioral isolation (e.g., different mating dances or songs) can prevent inter - breeding with other populations. In a large forest in North America, there is more gene flow (mixing of genes between populations) as finches can move more freely, reducing the chance of speciation. Gene flow (A) would actually reduce speciation. Mutations (D) are random and not directly related to the island vs. mainland habitat in a way that explains higher speciation. Geographical isolation (D) is usually higher on islands (opposite of what the option says). Behavioral isolation is a key mechanism in speciation, especially in isolated environments like islands.

Answer:

B. The island finches have more behavioral isolation.