Evolution Vocabulary Practice

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Across
  1. 2. structures that are similar in form
  2. 3. "leftover" structure
  3. 4. remains of dead organisms preserved in rock
  4. 6. characteristic that improves fitness
  5. 8. change over time
Down
  1. 1. combining genes during sexual reproduction
  2. 3. differences between individuals in a species
  3. 4. organism's ability to survive and reproduce
  4. 5. change in DNA
  5. 7. section of DNA that codes for a trait