This chapter is concerned with the process of microevolution (macroevolutionary theory is discussed in Chapter 10). Starting with a brief description of populations and Hardy-Weinberg equilibrium, the chapter provides an intuitive, relatively nonmathematical approach to microevolutionary theory. While some specific examples from human populations are given, most case studies are deferred to later chapters. For those instructors wishing a more mathematical approach, Appendix 1 provides further information on basic population genetics—only high school algebra is required.
