genetics

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Across
  1. 5. a trait that is always expressed
  2. 6. unit of heredity
  3. 9. the genetic code
  4. 10. having 2 identical alleles for a trait
  5. 11. a characteristic inherited by a parent
Down
  1. 1. one of each gene for a trait
  2. 2. the physical appearance
  3. 3. study of heredity
  4. 4. many genes together express a trait
  5. 7. masked by a dominant
  6. 8. when both genes are expressed