Evolution

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Across
  1. 1. fossil a fossil that has been dated
  2. 5. structure similar structures that came from a common ancestor
  3. 6. shows the structure of organisms that lived long ago
  4. 7. Genes that control how bodies are structured
Down
  1. 2. is an early stage of animal development, before the fetus
  2. 3. anatomy comparing body parts; like bones to see if they have a common ancestor
  3. 4. structure A structure that has no purpose