C. (7-10.) complete the map of the following textbook passage by filling in the missing main idea and major and minor details. monogamy, the practice of each person marrying one other person in his or her lifetime, is just one of several types of marriage that occur throughout the world. a separate but related form of marriage is serial monogamy, which allows a person to have several spouses in a lifetime, but only one at a time. the practice of polygamy allows persons to have multiple spouses at the same time. there are two forms of polygamy. one variety is polygyny, in which one man has several wives at once. "the other is polyandry, in which a woman may have multiple husbands.