Ch. 18 Vocab

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Across
  1. 3. type of selection in which individuals near the center of the curve have higher fitness than individuals at the extremes
  2. 4. when a population is not evolving
  3. 5. change in allele frequency following a dramatic reduction in the size of the population
  4. 9. number of times an allele occurs in a gene pool
  5. 10. random change in allele frequences
  6. 11. type of selection that favors one of the extreme variations of a trait
Down
  1. 1. all of the genes present in a population
  2. 2. type of selection in which individuals at the upper and lower ends of the curve have higher fitness
  3. 6. change in allele frequencies as a result of the migration of a small subgroup
  4. 7. trait controlled by more than two genes
  5. 8. a trait controlled by only one gene