The Example of the Sickle-Cell Allele Demonstrates a Key Aspect

question 21

Multiple Choice

The example of the sickle-cell allele demonstrates a key aspect of evolution through natural selection,in that

• A) adaptation and fitness are in relation to the individual organism, not the general population.
• B) human populations in the tropics are the most susceptible to random changes caused by natural selection.
• C) natural selection increases the variety in a population upon which subsequent natural selective processes can act.
• D) adaptation and fitness are in relation to specific environments; traits are not universally adaptive or maladaptive.
• E) although natural selection usually acts upon the phenotype, it can sometimes act upon the genotype.

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Definitions:

Eyewitness Memory

The recollection by an individual of events they have witnessed, important in legal contexts but known for its potential inaccuracy.

Mock Witnesses

Individuals used in legal or psychological experiments simulating real witnesses to understand the reliability and factors affecting eyewitness testimony.

Leading Questions

Questions designed to suggest a particular answer, often used in a way that influences the response of the person being asked.

Bias

Bias refers to a tendency, inclination, or prejudice towards or against something or someone, often in a way considered to be unfair.