Chapter 16/17 Crossword

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Across
  1. 5. One end of bell-curve has higher
  2. 7. both ends of the curve have a higher fitness than the middle
  3. 8. In small populations, chance can cause alleles to become more or less common which is called ______.
  4. 9. A change following a dramatic reduction in the size of the population.
  5. 10. A change when only a few move to new area and become the dominant alleles for that population.
Down
  1. 1. A trait controlled by only one gene
  2. 2. Middle of the curve has higher fitness
  3. 3. A trait controlled by 2 or more genes.
  4. 4. The number of times that the allele occurs in a gene pool, compared with the number of times other alleles for the same gene occur.
  5. 6. All the genes, and their alleles, in the population.