PSYC 3100 Study Guide - Midterm Guide: Consanguinity, Grey Matter, Motor Learning

• School: University of Guelph
• Department: Psychology
• Course: PSYC 3100
• Professor: Don Dedrick

Document Summary

Sexual dimorphism: not as pronounced in humans as in other species. How does reproduction work: the paradox of sex. Imagine two competing populations, one that produces asexually, and one sexually. Competition -> when an individual makes a resource (a mate), less available to others. A sexual reproducer has to find a mate. Flowering plants have a hard time getting dates, and so do some homo sapien males . Fish follow rule of choosing best genes, unconsciously. Dif culty of nding a mate is also a cost. The size and number of eggs makes them precious. The 9 month time period is an investment. Sexual reproduction is costly, but it is widespread among multicellular organisms. Since it is costly, it probably has an evolutionary advantage to pay the cost. Did it evolve to increase variation, a necessary condition for natural selection: may not do so.