1. An organism's complete set of genetic instructions is called: A) the sex chromosome. B) a mutation. C) the double helix. D) the genome. 2. Compared to fraternal twins, identical twins are: A) less similar in their risk of developing Alzheimer's disease and less similar in risk of being emotionally unstable. B) more similar in their risk of developing Alzheimer's disease and more similar in risk of being emotionally unstable. C) equally similar in their risk of developing Alzheimer's disease and more similar in risk of being emotionally unstable. D) more similar in their risk of developing Alzheimer's disease and equally similar in risk of being emotionally unstable. 3. Adoptive parents are least likely to influence the ________ of their adopted children. A) personality traits B) religious beliefs C) political attitudes D) moral values 4. In emphasizing that heredity's effects on behavior depend on a person's home environment, psychologists are highlighting the importance of: A) the double helix. B) gender differences. C) the human genome. D) nature-nurture interactions. 5. Which of the following is a major source of genetic diversity? A) chromosomes B) gender C) mutations D) individuality Page 1 6. The prevalence of genetically predisposed traits that have a reproductive advantage is best explained in terms of: A) gender diversity. B) natural selection. C) behavior genetics. D) the human genome. 7. It has been suggested that men in all cultures tend to marry women younger than themselves because men are genetically predisposed to seek female features associated with youthful fertility. This suggestion best illustrates: A) social learning theory. B) behavior genetics. C) Freudian psychology. D) an evolutionary perspective. Page 2 Answer Key 1. 2. 3. 4. 5. 6. 7. D B A D C B D Page 3