Which of the following causes Down syndrome?
A) The presence of an extra chromosome on the 21st pair
B) The presence of only 22 pairs of chromosomes
C) The presence of more than 23 pairs of chromosomes
D) The presence of an extra chromosome on the 23rd pair
A
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Janet proposed that hysteria was caused by mental phenomena
a. True b. False
Testosterone levels in men appear to fluctuate in response to
A. internal biological clocks. B. competition. C. sexual frequency. D. mental imagery.
Which of the following is one of several features of Asian schools that reflect collectivistic cultural beliefs?
a. Children are required to help maintain the cleanliness and order of the school. b. Children are required to go to school fewer days than children in Western cultures. c. Rather than wearing a school uniform, parents decide how their children will dress. d. Children often work alone so they can master difficult skills as quickly as possible.
______ are problems that have a clearly defined goal state and constraints, whereas ______ are problems that lack a clearly defined goal state and constraints.
A. well-defined; ill-defined B. ill-defined; well-defined C. concrete; abstract D. abstract; concrete