Which of the following statements about epigenetics is true?
a. Epigenetic changes are only one of many ways that experience can modify DNA expression.
b. Epigenetic findings are rejected by most developmental scientists because they contrast with traditional views of heredity and environment.
c. Epigenetics has proven that there is no biological mechanism through which experiences can affect gene expression.
d. Through over a century of research, epigenetics has contributed substantially to the body of developmental knowledge.
Answer: a. Epigenetic changes are only one of many ways that experience can modify DNA expression.
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In a negative correlation, a. individuals tend to maintain the same or a similar relative performance
b. scores on one variable tell us nothing about scores on a second. c. individuals who score low on one variable tend to score low on a second. d. high scores on the X variable are associated with low scores on the Y variable.
If the variability of the raw score population increases and N is held constant, _________
a. decreases c. stays the same b. increases d. need more information