Across
- 3. The genetic make up of an organism
- 5. Someone who studies heredity
- 7. One of two versions of a gene
- 8. An organism that has two similar alleles for a particular trait
- 12. The study of heredity
- 13. Deoxyribonucleic acid, the molecule that carries genetic information
- 14. An organism that has two different alleles for a particular trait
- 15. The basic unit of heredity
Down
- 1. The observable characteristics that an organism shows
- 2. A change in the DNA's sequence
- 4. Ribonucleic acid, a nucleic acid present in all living cells
- 6. A specific characteristic of an individual
- 9. A trait that is only expressed when two copies of the allele are present
- 10. A trait that is expressed even when only one copy of the allele is present
- 11. The passing of genes to offspring