Unit 3 Genetics Review

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Across
  1. 4. a combination of alleles
  2. 7. a type of dominance where both alleles of a gene are partially expressed
  3. 8. an allele that is masked when a dominant allele is present.
  4. 10. an allele whose trait always shows up in the organism when the allele is present.
  5. 12. the scientific study of heredity.
  6. 13. the different forms of a gene.
Down
  1. 1. when both alleles are expressed at the same time
  2. 2. the DNA that controls a trait.
  3. 3. the alleles for a trait are identical
  4. 5. the passing of traits from parent to offspring
  5. 6. the alleles for a trait are different
  6. 9. how the trait physically appears in an organism
  7. 11. a characteristic that an organism can pass on to its offspring through its genes.