Genetics puzzle

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Across
  1. 5. what you see, observable
  2. 7. 2 same alles
  3. 8. Traits passed on
  4. 9. BB,Tt,aa
Down
  1. 1. must be paired with same letter
  2. 2. passed from parent to offspring
  3. 3. 2 different alles
  4. 4. “father of genetics”
  5. 5. illustrates inheritance through generations
  6. 6. at least one capital letter