________ show their effect even if there is only one copy of that gene in the pair.
A. Glial cells
B. Synaptic vesicles
C. Dominant alleles
D. Neurons
Answer: C
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How do we know that genes play a role in pubertal timing?
A. because researchers have identified a gene that triggers puberty and can track the timing B. because identical twins experience menarche at about the same time, whereas fraternal twins can vary by a year or more C. because there are no other consistent reasons for why puberty occurs D. because siblings of all ages experience puberty at about the same age
Studies comparing breast-feeding with bottle-feeding show that
breast-fed babies have fewer allergies and stomachaches. breast-feeding is recommended for all mothers and babies. scientific improvements make bottle-feeding a better choice. breast-feeding should stop when the baby gets the first tooth.
All of the following are true about attitudes EXCEPT one. Which one is false?
a. Attitudes are related to our temperament and personality. b. Attitudes rarely change over time. c. Attitudes can be changed with persuasive communications. d. Under the right conditions, attitudes predict people's behavior.
Regarding highly creative people, which of the following statements is FALSE?
a. Although people with high IQs can be quite creative, there is generally little correlation between creativity tests and IQ test scores. b. Creative people usually have a very narrow range of knowledge and interests. c. Creative people are good at using mental images and metaphors in thinking. d. Creative people are unconventional and nonconforming primarily in their work, but, otherwise, do not have unusual, outlandish, or bizarre personalities.