Ch 12 Vocabulary (skip a space between multiple words)

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Across
  1. 5. one of the scientists to propose theory of natural selection
  2. 11. also known as gene flow
  3. 12. when a population`s characteristics change over time as advantageous features become more common
  4. 14. also known as non-random mating
Down
  1. 1. eliminates alleles from a population
  2. 2. heritable features that improve an organism`s ability to survive
  3. 3. equilibrium that exists with non changing allele frequencies over time
  4. 4. selection that favors intermediate phenotypes
  5. 6. size of population becomes drastically reduced
  6. 7. selection that favors one phenotype over another
  7. 8. selection that favors both extreme phenotypes
  8. 9. ability to reproduce
  9. 10. natural selection occurs in this
  10. 13. effect caused by few individuals starting a new population
  11. 15. genetic changes in DNA that occurs over time