Answer to Question 1
ANSWER:
This theory argues that inbreeding causes negative social consequences. It maintains that there is family jealousy and role ambiguity.
Answer to Question 2
ANSWER:
Benefits include the creation of fairly stable relationships between men and women that regulate sexual mating and reproduction, a mechanism for regulating the sexual division of labor, and the creation of a set of family relationships that provide for the material, educational, and emotional needs of children for a long period of time.