Across
- 2. The form of a gene
- 4. Having two identical alleles of a gene
- 5. An allele that is expressed when only one is present
- 7. An allele that is only expressed when two are present
Down
- 1. The alleles of an organism
- 3. A section of DNA that codes for a protein
- 4. Having two different alleles of a gene
- 6. The characteristics of an organism