Which Statement About Genetic Drift Is False

question 60

Multiple Choice

Which statement about genetic drift is false?

• A) It affects allele frequencies most when populations are small.
• B) It can cause slightly deleterious alleles to be fixed in populations.
• C) It tends to decrease genetic variation within populations.
• D) It tends to decrease genetic differences among different populations.

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Definitions:

Absolute Threshold

The smallest amount of stimulation needed for a stimulus to be detected by the senses 50% of the time.

Just Noticeable Difference

The minimum difference in stimulation that a person can detect 50% of the time.

Absolute Threshold

The minimum intensity of a stimulus that one can detect 50% of the time, a concept central to the study of sensory processes.

Taste Constancy

The perception that the flavor of a food item remains consistent despite changes in the environment or context.