Discuss Sickle Cell Anemia as an Example of Natural Selection

question 49

Essay

Discuss sickle cell anemia as an example of natural selection at work in the human population.

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Definitions:

Counterclaim

A legal claim made in response to the plaintiff’s initial claim in a civil suit. Unlike a defense, the counterclaim is the defendant’s affirmative attempt to obtain legal relief; in effect, it states a cause of action entitling the defendant to such relief. Often, the counterclaim must arise out of the occurrence that forms the basis for the plaintiff’s claim.

Compelled to Testify

The legal obligation of a witness to give testimony in a legal proceeding, even against their own interest, under penalty of law.

Affirmative Defense

A defense used in litigation where the defendant introduces evidence, which, if found to be credible, will negate criminal or civil liability, even if it is proven that the defendant committed the alleged act.

Breach of Contract

A violation of any of the agreed-upon terms and conditions of a binding contract, without lawful excuse.