| A | B |
|---|
| dominant | A trait that always appears when the allele is present. |
| recessive | A trait that can can be masked or covered up. |
| homozygous | Having two of the same alleles for a trait. TT tt |
| heterozygous | Having two different alleles for a trait. Tt. |
| purebred | an organism that always passes along the same gene |
| hybrid | an organism with 2 different alleles for a trait |
| phenotype | what you look like- physical characteristic |
| genotype | which two alleles you have, the letters |
| gene | a portion of DNA on a chromosome that controls the inheritance of a trait |
| allele | the different forms of a trait or gene |
