genetics

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Across
  1. 1. differs by one trait
  2. 5. the study of heredity
  3. 8. the physical appearance
  4. 9. characteristics that are inherited
Down
  1. 2. the hidden trait
  2. 3. different gene combinations
  3. 4. differs by two traits
  4. 6. monk who studied heredity
  5. 7. the observed trait