Across
- 4. Traits that are expressed
- 8. The study of heredity
- 9. Body chromosomes
- 11. The study of cells
- 13. The study of tissues
- 16. Combination of teo different alleles
- 17. Mating of two organisms
- 18. The classification of a living thing
- 19. Combination of two same alleles
- 20. Transfer of traits
Down
- 1. Containment of genes
- 2. The study of viruses
- 3. The study of the environment
- 5. Refers to external appearance
- 6. Traits that are hidden
- 7. The study of bacteria
- 10. The study of microorganisms
- 12. Combination of genes in an organism
- 14. The study of organ
- 15. Genes located inside the nucleus