General Biology 2: Mechanisms that Produce Change in Population

Subject: Biology 2

Topic: Mechanisms that Produce Change in Population

Difficulty: Medium

Questions: 5

Passing Score: 70%

Question #1 1 point

A population of insects includes both green and brown individuals. After several generations in a forest with dark soil, most insects are brown. What best explains this change?

A: Adaptation

B: Selection

C: Mutation

D: Migration

Question #2 1 point

A student claims that evolution happens because organisms get what they “need” to survive. Which concept correctly challenges this idea?

A: Variation

B: Inheritance

C: Selection

D: Extinction

Question #3 1 point

After a volcanic eruption drastically reduces a population of animals, the surviving group shows much less genetic variation than before. Which evolutionary mechanism is responsible for this change?

A: Gene flow

B: Mutation

C: Founder effect

D: Bottleneck effect

Question #4 1 point

A few individuals from a large bird population migrate to a remote island and establish a new population with limited genetic diversity. What type of genetic drift is occurring?

A: Bottleneck effect

B: Natural selection

C: Founder effect

D: Inbreeding

Question #5 1 point

Two populations of the same species begin exchanging members through migration, causing new alleles to appear in both groups. Which process explains this movement of genes?

A: Genetic drift

B: Mutation

C: Gene flow

D: Artificial selection

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