Neutrality Vs Selection Crossword

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Across
  1. 2. Theory defended by Darwin
  2. 5. Kimura quantitatively studied _____ substitution.
  3. 6. Name of the Island with Darwin's Finches
  4. 7. Observable trait of an organism
Down
  1. 1. Biologist who proposed the Neutral Theory
  2. 3. Name of scientist who proposed the Nearly Neutral Theory
  3. 4. The phenotype of the finches that sparked the theory of natural se