A one-to-one relationship exists between phenotype and genotype. Therefore, for every genotype a corresponding phenotype results

During adolescence, the gender differences in self-esteem

a. reveal both statistical significance and practical significance throughout adolescence. b. are relatively large for Black females and males. c. are relatively large for females and males who come from well-educated families. d. are not consistent, and they are not very large.

In the ideal situation, the behavioral observer will be

a. an untrained, objective individual unknown to the subject or the behavior modification process. b. a parent or other person with intimate knowledge of the subject. c. a practitioner or trained assistant. d. a familiar individual that the subject is comfortable with but that can be more objective than a parent (e.g. a teacher)