Biology Forums - Study Force

Krebs believes that the tendency to favor members of our in-groups
 
  a. is a tendency that developed independently of evolutionary processes, and did not
  emerge until a very late stage of human development.
  b. proves that human institutions could not have developed through evolutionary
  processes.
  c. was essential for the development of cooperative coalitions.
  d. is much less common than is often supposed.
  e. occurs much more often in chimpanzees than in humans.

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