Chapter 21 Key Terms

• p. 478: microevolution, macroevolution, sickle cell anemia
  
• p. 481: industrial melanism, tailings
  
• p. 482: fossil record, molecular record, homology, development, vestigial structures, convergent evolution, patterns of distribution
  
• p. 483: titanotheres, Early Eocene Epoch, Early Oligocene Epoch, Middle Eocene
  
• p. 486: phylogenetic tree, coccyx, lanugo, vermiform appendix, appendicitis
  
• p. 488: mesonychids
  
• p. 490: placental mammals, marsupials, punctuated equilibria (singular, equilibrium), stasis
  
• p. 492: gradualism, scientific creationism
  
• p. 493: melanic