In Humans,the Sickle-Cell Trait Is Caused by a Single Defective

question 60

Multiple Choice

In humans,the sickle-cell trait is caused by a single defective allele,but sickle-cell disease only occurs in individuals that are homozygous for the sickle-cell allele.A man and woman each carry the trait,but do not have sickle-cell disease.What is the probability that their first two children will both have sickle-cell disease?

• A)1/16
• B)1/8
• C)1/4
• D)3/8
• E)1/2

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Definitions:

Deposit Multiplier

The ratio of the amount of deposits created by banks to the amount of new reserves.

Reserve Ratio

The fraction of depositors' balances banks must have on hand as cash, a regulatory requirement designed to ensure banks' liquidity and stability.

Inflation

The pace at which prices for goods and services broadly ascend, causing the value of money to decrease.

Federal Reserve System

The central banking system of the United States, responsible for regulating the national money supply and ensuring financial stability.