The Volcano Is Currently Dormant, but in a Hypothetical Future

question 80

Multiple Choice

The volcano is currently dormant, but in a hypothetical future scenario, satellite cones at the base of Mt. Kilimanjaro spew sulphurous gases and lava, destroying all life located between the base and 1830 metres above sea level. As a result of this catastrophe, how should the frequency of the sickle-cell allele change in the remnant human population that survives above 1830 metres, and which phenomenon accounts for this change in allele frequency?

• A)decreases; disruptive selection
• B)increases; genetic drift
• C)decreases; gene flow
• D)increases; nonrandom mating
• E)decreases; bottleneck effect

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Definitions:

Affection

A feeling of fondness or liking towards someone or something, which can manifest as physical closeness, emotional support, or acts of kindness.

Self-Evaluation Model

A psychological framework that explains how individuals assess their own performance and attributes in relation to others.

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A popular saying reflecting the idea that people who are unhappy or in misery may get consolation from knowing that others are unhappy too.