Across
- 3. Structure made of DNA that contains genes
- 4. Allele that is masked by another allele
- 7. One of two or more versions of a gene
- 8. Cell division that produces gametes
- 10. Observable traits of an organism
- 11. Molecule that carries genetic instructions
- 12. Allele that masks another allele
Down
- 1. A change in the DNA sequence
- 2. Passing of traits from parents to offspring
- 5. The basic unit of heredity
- 6. Genetic makeup of an organism
- 9. The one who made the puzzle