| A | B |
|---|
| gene | a section of DNA that determines 1 trait |
| chromosome | a piece of DNA and protein |
| trait | a genetically-determined characteristic, such as height or eye color |
| allele | one of twp versions of a trait |
| dominant trait | a trait that is always visible |
| recessive trait | a trait that is sometimes hidden |
| hybrid | having one dominant and one recessive gene |
| purebred | having both genes for a trait be the same |
| karyotype | a picture of a person's chromosomes |
| DNA | deoxyribonucleic acid |
| mutation | a mistake in the DNA |
