The study of mechanisms by which gene expression can be modified is known as:
A. genetics
B. buirhythms
C. eurythmic
D. epigenetics
Answer: D. epigenetics
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On average, which of these starts at an earlier age today than it did 100 years ago?
a. Onset of senility b. Marriage c. Financial independence d. Onset of puberty
According to a study cited in your text (National Center for Education Statistics, 2007), which age group is be the least likely to drop out?
A. 15 year olds B. 17 year olds C. 18 year olds D. 19 year olds
Behaviorists would describe personality as
a. an expression of conflicting psychological forces. b. a collection of learned patterns of behavior. c. the impact of culture on an innate hierarchy of needs. d. a behavioral expression of fixed action patterns.
What is the correct statement about the numbers of teens who engage in sexual intercourse between the ages of 15 and 18?
a. The percentage remains steady from ages 15 to 18. b. The percentage increases between the ages of 15 and 16 and then levels off. c. The percentage at 18 is much less than the percentage at 15. d. The percentage increases dramatically and steadily from ages 15 to 18.