Across
- 3. different versions of a single trait
- 4. characteristic found on a gene
- 6. carries only dominant alleles or only recessive alleles - never both
- 8. segment of DNA that has a specific location that contains instructions for our individual characteristics
- 12. physical characteristic or visible trait
- 13. genetic makeup or allele combination
- 14. trait that is masked when a dominant allele is present - trait only shows up when it is homozygous
Down
- 1. trait that will always show up in an organism when this allele is present
- 2. double helix which is made up of nucleotides
- 4. humans have twenty-_______ pairs of chromosomes
- 5. bundles of tightly coiled DNA
- 7. scientific study of heredity
- 9. passing of genetic traits from parents to offspring
- 10. carries both dominant and recessive alleles
- 11. _________ square that shows all possible combinations of alleles that can result from a genetic cross