In animal models of obesity, a mutation in the agouti gene can produce an animal that is very obese and has a yellow coat color; however, a particular ______ by the mother can alter this outcome in any offspring with this mutation.

Why do African Americans have an elevated risk for developing sickle-cell anemia?

a) Their diet is conducive to the disease. b) They have very high levels of oxygen in the blood. c) They are prone to produce elevated amounts of cholesterol. d) They are more likely to carry the recessive gene for the disease.

Which type of therapist would purposefully anger a client?

a) Gestalt b) humanistic c) existential d) cognitive-behavioral