Principles of Evolution/Intro to Natural Selection

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Across
  1. 2. better adapted organisms reproduce
  2. 4. ability of trait to be passed down
  3. 6. "Darwin's birds"
  4. 12. by chance, not planned
  5. 13. organism with similar traits, can reproduce
  6. 16. happens to bird with "wrong song"
  7. 18. survival of the lucky
  8. 20. measure of who is better equipped
  9. 21. gradual change of organisms over time
  10. 22. carries genetic instructions
Down
  1. 1. remains preserved in rock
  2. 3. challenge created by nature
  3. 5. Darwin's island
  4. 7. created soot which exposed white moths
  5. 8. trait one gains in one's lifetime
  6. 9. being separated by land, water, etc.
  7. 10. said acquired traits are hertitable
  8. 11. famous for evolution
  9. 14. forming a new species
  10. 15. differences in the population
  11. 17. allows organism to better survive
  12. 19. random error or change in DNA