In Your Textbook,the Smaller Frequency of Sickle-Cell Anemia Among Present

question 3

Multiple Choice

In your textbook,the smaller frequency of sickle-cell anemia among present day American blacks as compared to West African blacks is attributed to:

• A)genetic drift.
• B)gene flow.
• C)new mutations.
• D)none of the above

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Definitions:

Future Value

The value of a current asset at a specified date in the future based on an assumed rate of growth or return.

Present Value

Today's equivalent value of a forthcoming sum of money or stream of payments, according to a specified interest rate.

Compound Interest

This refers to the method of calculating interest where the amount is based on the initial principal as well as the interest that has accumulated over prior periods for a loan or deposit.

Future Value

The value of an asset or cash at a specific future date, based on its expected growth over time.