Biology

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Across
  1. 1. selection force driving populations together
  2. 2. selection force of nature that causes populations to evolve
  3. 5. isolation isolation based on organisms behavior
  4. 9. structures structures that evolved from a common ancestor
  5. 10. flow genes migrate from one population to another
  6. 11. isolation reproductive system that deals with time
  7. 12. changing of a structure of a gene
  8. 14. isolation able to reproduce among the same species
Down
  1. 1. new species form
  2. 3. structures a resemblance in structures that aren't related
  3. 4. structures part of the body that isn't useful anymore
  4. 6. selection force driving populations apart
  5. 7. selection organisms better adapt to their environment
  6. 8. isolation isolation due to a physical land barrier
  7. 13. drift change in genes frequency