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:

Punitive Damages

Compensation awarded in a lawsuit as a punishment to the defendant for malicious, violent, oppressive, fraudulent, or reckless behavior, and to deter similar conduct in the future.

Consent Decree

A legal agreement approved by a judge, often used to settle lawsuits without the defendant admitting guilt but agreeing to do or stop doing certain actions.

Affirmative-Action Practices

Strategies and policies employed to promote opportunities for historically marginalized groups in areas such as employment and education.

Uniformed Services Employment

Laws and regulations that protect the employment rights of individuals serving in the armed forces or other uniformed services.