Please Use the Following Information to Answer the Question(s) Below

question 70

Multiple Choice

Please use the following information to answer the question(s) below.
In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the β hemoglobin alleles in the human gene pool.
-Considering the overall human population of the U.S. mainland at the time when the slave trade brought large numbers of people from equatorial Africa, what was primarily acting to change the frequency of the sickle-cell allele in the overall U.S. population?

• A) natural selection
• B) gene flow
• C) genetic drift
• D) founder effect
• E) Two of these responses are correct.

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Definitions:

Cash Consideration

Payment made in cash during a transaction, as opposed to stock exchange or other non-cash assets.

Amortised Cost

A financial valuation technique that gradually writes off the initial cost of an asset over a period, or the method of allocating the cost of an intangible asset over its useful life.

Effective Interest Rate

The rate that discounts the estimated future cash payments or receipts through the expected life of the financial liability or asset or, when appropriate, a shorter period to the net carrying amount of the financial asset.

Reclassification Date

The specific date on which financial assets are reclassified between different categories, affecting how they are measured and recognized.