If a particular trait is highly heritable, we would expect to see the highest concordance rates among:

In the Roll et al. study, which was the main piece of research in the article Yoking Smoking about operant

conditioning, the control group represented (a) non-contigent reinforcement (b) complete abstinence (c) a fixed ratio schedule (d) non-smokers

Phenylketonuria can be used to illustrate

a. the dramatic effects of prenatal malnutrition. b. the importance of early detection of chromosomal anomalies. c. why women should give birth at an early age. d. how nature and nurture interact.