Across
- 3. The physical characteristics of an organism
- 4. The allele that is masked by the dominant allele
- 6. The allele that masks the expression of the recessive allele
- 8. An organism that has two different alleles for the same gene
- 9. Different forms of a gene
- 10. the genetic makeup of an organism
Down
- 1. A tool scientists use to investigate the possible combinations of genetic crosses (2 words)
- 2. The splitting of a cell into two cells
- 5. An organism that has two identical alleles for a particular gene
- 7. The science of how characteristics are passed down from one generation to the next