This four-color lab manual contains 21 lab exercises, most of which can be completed within two hours and require minimal input from the instructor. To provide flexibility, instructors can vary the length of most exercises, many of which are divided into several parts, by deleting portions of the procedure without sacrificing the overall purpose of the experiment. Taking a consistent approach to each exercise, the second edition provides an even clearer presentation, updated coverage, and increased visual support to enable students to apply concepts from the Human Biology course.