Across
- 4. a trait hidden when the dominant allele is present
- 5. An organism that has two identical alleles for a trait.
- 7. occurs when both alleles for a gene are expressed equally
- 9. the different forms of a gene
- 12. occurs when one allele is partially dominant.
- 13. a chart that shows all the ways alleles can combine in a genetic cross.
- 14. the trait is determined by three or more possible alleles.
Down
- 1. a number that describes how likely it is that an event will occur
- 2. an organism's physical appearance, or visible traits.
- 3. an organism that has two different alleles for a trait.
- 6. the scientific study of heredity
- 8. the factors that control a trait
- 10. an organism's genetic makeup
- 11. A trait that always shows up in the organism when the allele is present