14
QuizMultiple Choice

Population Genetics — Unit test

Question 14 • 112 CCHS Environmental Science

Which of the following is most likely an example of genetic drift resulting from the founder effect?

Answer
A
The species’ physical habitat is limited.
B
The population expresses a mix of dominant and recessive traits.
C
The species occupies a small, specific niche.
D
A population commonly expresses traits that are otherwise rare in the species.

Explanation

The founder effect occurs when a small group starts a new population, carrying only a subset of the original population’s genetic variation. By chance, traits that were rare in the larger species may be common among the founders and become common in their descendants. Therefore, a population commonly expressing traits that are otherwise rare in the species is the best example.

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