Evolution

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Across
  1. 3. Have a common origin and reflect a common ancestry
  2. 5. One population divided into 2 distinct types.
  3. 6. Movement of alleles in and out of a population.
  4. 7. Evidence that the structures have evolved
  5. 9. One phenotype replaces another in the gene pool.
  6. 11. Natural disasters reduce the size of the population unselectively
Down
  1. 1. Have the same function, but the similarity is superficial and reflects an adaptation to similar environments.
  2. 2. Eliminates the extremes and favors the more common intermediate forms.
  3. 4. Increases the extreme types in a population at the expense of intermediate forms.
  4. 8. All aerobic organisms that carry out aerobic cell respiration contain this polypeptide.
  5. 10. When a small population breaks away from a larger one to colonize a new area