In the mating game, students experience how differences in parental investment between males and females lead to differences in reproductive strategies. Here, five males compete for the opportunity to mate with one receptive female.
Expected results, showing (A) number of matings obtained by each female, (B) number of matings obtained by each male, (C) total reproductive success points earned by each female, and (D) total reproductive success points earned by each male. Data were modified from actual classroom results to represent a class size of 18 students with the quality score distribution specified in Table 1 (quality decreases from left to right across each x-axis).
Following the exercise and discussion, we ask students to complete this conceptual flowchart to formalize the relationship between parental investment and sex roles. Students are instructed to select the correct bold word(s) in each box. (Adapted from figure 11-6 in Alcock, 2001.)