Chapter 17

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Across
  1. 7. one end of bell-curve has higher fitness.
  2. 8. is a trait controlled by only one gene.
  3. 10. both ends of the curve have a higher fitness than the middle.
Down
  1. 1. is the number of times that the allele occurs in a gene pool, compared with the number of times other alleles for the same gene occure.
  2. 2. is controlled by 2 or more genes.
  3. 3. is a group of individuals of the same species that can be interbreed.
  4. 4. middle of the curve has higher fitness.
  5. 5. is all the genes, and alleles, in the population.
  6. 6. any change in a sequence of DNA.
  7. 9. occurs during gamete formation.