mechanism of genetics

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Across
  1. 2. physical expression of genes
  2. 4. Father of genetics
  3. 5. a single trait represented by a single letter
  4. 7. The allele that is always expressed when present
  5. 8. The genetic information for a trait
  6. 9. The letters for a trait are the same
Down
  1. 1. The trait that can be hidden
  2. 3. The letters for a trait are different
  3. 6. One trait being investigated: 2 letters per parent