Elizabeth chupurdy chapters 16-17

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Across
  1. 4. selection both ends of curve have higher fitness than the middle
  2. 5. anybody of the same species that can interbreed
  3. 7. selection one end of the bell curve has higher fitness
  4. 8. shuffling one source of genetic variation
Down
  1. 1. any change in a sequence of DNA
  2. 2. selection middle of curve has higher fitness
  3. 3. any change in the relative frequency of alleles in a population
  4. 6. frequency the number of times that the allele occurs in a gene pool compared with the number of times other allels for the same gene occur