Mechanism of genetics

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Across
  1. 5. different letter for a trait
  2. 6. genetic info for a trait
  3. 8. same letters for a trait
  4. 9. allele that is always expressed when present
Down
  1. 1. one trait represented by one letter
  2. 2. two traits being investigated
  3. 3. one trait being investigated
  4. 4. trait that can be hidden
  5. 7. physical expression