The Persistence of the Sickle-Cell Anemia Allele in Some African

question 27

Multiple Choice

The persistence of the sickle-cell anemia allele in some African populations is the result of ____.  

• A) a high rate of mutation of the normal allele to the sickle-cell anemia allele
• B) the advantage conferred by the heterozygous form when malaria is prevalent
• C) nonrandom mating
• D) a decline in the occurrence of malaria in Africa
• E) genetic drift

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Definitions:

Socialist Ideas

Economic and political theories advocating for public or collective ownership and administration of the means of production and distribution of goods.

Nationalism

Ideological movement or sentiment that emphasizes loyalty, devotion, or allegiance to a nation or nation-state and often places its interests above those of other countries.

Novel

A lengthy fictional narrative, usually in prose form, that explores characters and their interactions in a certain setting and plot.

Haymarket Affair

Violence during an anarchist protest at Haymarket Square in Chicago on May 4, 1886; the deaths of eight, including seven policemen, led to the trial of eight anarchist leaders for conspiracy to commit murder.