Nature and Nurture

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Across
  1. 2. Identical.
  2. 5. Nature
  3. 6. Culture
  4. 7. Environment
  5. 9. Genetics
Down
  1. 1. Fraternal
  2. 2. Influence
  3. 3. Genes
  4. 4. Brain
  5. 5. Nurture
  6. 8. Traits