Biology Vocab Crossword

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Across
  1. 2. structure not of use anymore, used to be
  2. 4. formation of a new species
  3. 5. both ends high fitness
  4. 7. similarities in sequences of molecules
  5. 8. change in frequency of gene
  6. 9. drop in population due to natural events
  7. 11. same structure, different structure
Down
  1. 1. one side higher fitness
  2. 3. middle high fitness
  3. 6. same function, different structure
  4. 10. geographical distribution