cranial nerves

A growing number of researchers regard the question of how much heredity and environment contribute to differences among people as
Selected Answer: mainly answered by DNA.

Question 2
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Fetal monitors

Selected Answer: track the baby's heart rate during labor.

Question 3
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Patsy and Terry are fraternal twins. This type of twinning results from

Selected Answer: the fertilization of one ovum by two Y-bearing sperm.

Question 4
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Accumulating evidence reveals that the relationship between heredity and the environment is

Selected Answer: bidirectional. Question 5
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According to B. F. Skinner, __________ will increase the frequency of a behavior and __________ will decrease the frequency of a behavior.

Selected Answer: punishment; reinforcement

Question 6
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A dependent variable is the

Selected Answer: one the investigator expects to be influenced by the independent variable.

Question 7
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Theories are vital tools for developmental researchers because they

Selected Answer: provide organizing frameworks for our observations of people.

Question 8
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A major strength of the longitudinal design is that researchers can

Selected Answer: study participants differing in age at the same point in time.

Question 9
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A __________ is a prediction about behavior drawn from a __________.

Selected Answer: hypothesis; theory

Question 10
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A zygote that separates into two clusters of cells instead of just one produces

Selected Answer: identical twins.

Question 11
0.5 out of 0.5 points

A __________ is a segment of DNA along the length of the chromosome.