Which statement regarding the role of genes on human behavior is accurate?
a. In general, a single gene drives behavior and small differences in auxiliary genes modify that behavior.
b. Typically, one to two particular genes drive specific patterns of human behavior.
c. Small differences in a cluster of genes typically drive specific behaviors.
d. Genes play a negligible role in driving human behavior.
ANSWER:
c
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The research of John Garcia and Robert Koelling on taste aversion is noteworthy in the understanding of learning because it demonstrated that
a. organisms are biologically prepared to learn certain associations. b. complex behaviors may be acquired by shaping of successive approximations. c. a more probable activity can be used to reinforce a less probable one. d. the associationist principles of learning are common to all organisms.
The unemployment rate for 20- to 24-year-olds is
a. half that of adults 25 and older b. the same as that of adults 25 and older c. twice that of adults 25 and older d. three times that of adults 25 and older