Question

Darwin’s finches evolved on an island. What is the main reason that islands often provide good examples of evolution?

A. They have many niches.
B. They have many organisms that live on them.
C. They allow for automatic biogeographic isolation.
D. They allow for many variations to exist in species.

Answer 1

Answer:

answer D.

Explanation:

They allow for many variations to exist in species.

Answer 2

Darwin’s finches evolved on an island. The main reason that islands often provide good examples of evolution is (D). They allow for many variations to exist in species.

• Many different species will form as they evolve to fill different niches on the island.
• Long necks were a random genetic change and resulted in the gradual increase of organisms with long necks.
• The population has evolved because there was a change in allele frequencies.

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