Studies of Phenylketonuria (PKU) Provide Particularly Strong Evidence for the Conclusion

question 69

Multiple Choice

Studies of phenylketonuria (PKU) provide particularly strong evidence for the conclusion that

• A) when some people fail to use some ability, that ability grows weaker and weaker in later generations.
• B) X-linked recessive genes express their effects more strongly in males than they do in females.
• C) all mammals are descended from a common ancestor.
• D) changes in the environment can alter the outcome of a condition that is under genetic control.

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Definitions:

Medium of Exchange

A facilitating device or arrangement employed to assist in the transactions of buying, selling, or trading items between entities.

Legal Tender

Currency that must be accepted if offered in payment of a debt, by law.

Federal Deposit Insurance

A government guarantee that protects bank depositors' funds up to a certain limit in case of a bank failure.

Bank Panics

Events in which a large number of bank customers withdraw their deposits simultaneously due to fears that the bank will become insolvent.