Both parents carry one recessive gene for sickle cell anemia,

but they do not have sickle cell anemia themselves. What is the chance that their child could have sickle cell anemia?
a. one chance in two
b. one chance in three
c. one chance in four
d. no chance (zero out of four)

ANSWER: c

Psychology

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John Bowlby is primarily associated with

A) ecological theory. B) ethological theory. C) social learning theory. D) sociobiological theory.

Psychology

To describe the characteristics of a population, survey researchers rely on responses from individuals from the population who

a. have volunteered to give the information. b. have been randomly assigned to the population. c. have been randomly selected from the population. d. are knowledgeable about the population.

Psychology