Chapter 3 Outline

Adaptive Evolution Observed

Natural Selection

  • The meaning of natural selection
  • Natural selection and chance
  • The effective environment depends on the organism

Levels of Selection

  • Selfish genes and unselfish behaviors
  • Selection of organisms and groups
  • Species selection

The Nature of Adaptations

  • Selection of and selection for Recognizing adaptations

Imperfections and Constraints

Natural Selection and the Evolution of Diversity

What Not To Expect of Natural Selection