Adaptive Evolution

Review Questions

Which type of selection results in greater genetic variance in a population?

  1. stabilizing selection
  2. directional selection
  3. diversifying selection
  4. positive frequency-dependent selection



When males and females of a population look or act differently, it is referred to as ________.

  1. sexual dimorphism
  2. sexual selection
  3. diversifying selection
  4. a cline



The good genes hypothesis is a theory that explains what?

  1. why more fit individuals are more likely to have more offspring
  2. why alleles that confer beneficial traits or behaviors are selected for by natural selection
  3. why some deleterious mutations are maintained in the population
  4. why individuals of one sex develop impressive ornamental traits