What Is the Most Likely Explanation for a Baby Boy

question 14

Multiple Choice

What is the most likely explanation for a baby boy to have Tay-Sachs disease when the child's mother is not a carrier for the problem, but the father is a carrier?

• A)The mother is not really the biological parent of this child.
• B)The mother's normal gene allele is not expressed, and the father's Tay-Sachs allele is expressed.
• C)A new mutation occurred in the father's sperm in which the Tay-Sachs gene has become dominant.
• D)The father's Tay-Sachs gene has been translocated from its usual locus to the Y chromosome and thus is expressed in any male child.

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Definitions:

Base Currency

The currency against which exchange rates are generally quoted in a given country, typically the currency of the home market.

Counter Currency

The second currency listed in a foreign exchange rate transaction, which can be bought or sold relative to the base currency.

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The ability of an individual or group to buy goods or services, often tied to income levels and inflation.

Appreciation

An increase in the value of one currency relative to another currency.