The Mutation That Became the Recessive Characteristic for Sickle-Cell Anemia

question 84

Multiple Choice

The mutation that became the recessive characteristic for sickle-cell anemia is adaptive in:

• A) malaria-prevalent environments
• B) non-African Americans only
• C) African Americans
• D) no known environments and, as a recessive characteristic, is likely to die out

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Definitions:

Components

The parts or elements that make up a whole system or object.

Connective

In formal logic, an operator that combines propositions to form a new proposition with a truth value derived from the original propositions.

Consistent

Marked by harmony, regularity, or steady continuity; free from contradiction.

Truth Tables

A table used in logic to determine whether a proposition is true or false for all possible logical variable combinations.