The Selective Pressure Acting on the ABO Blood System May

question 43

Multiple Choice

The selective pressure acting on the ABO blood system may be that people with blood types O and B are resistant to:

• A)sickle-cell anemia
• B)phenylketonuria
• C)smallpox
• D)tuberculosis

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Definitions:

Real Balances Effect

The impact of changing prices on the purchasing power of individuals' money holdings, influencing consumption and savings decisions.

Foreign Purchases Effect

The decrease in domestic demand for goods and services as a result of consumers buying goods from foreign markets, usually due to price or currency exchange advantages.

Interest Rate Effect

The interest rate effect describes how changes in the central bank's interest rate influence the economy by affecting consumer spending and investment.

Entropy Effect

In thermodynamics, it refers to the measure of disorder or randomness in a system; metaphorically used in various fields to describe chaos or decline.