| A | B |
|---|
| phenotype | what the trait looks like |
| genotype | the genetic code for a trait |
| trait | factors or characteristics of an organism |
| heredity | the passing of traits from parents to their offspring |
| genetics | the study of heredity |
| examples of inherited traits | examples: eye color, hair color, tall or short, tongue roll, cleft chin |
| dominant | the trait that will be expressed in a hybrid |
| recessive | the trait that will be hidden in a hybrid |
| hybrid | an organism with different genes for the same trait, one from each parent |
| purebred | an organism which has the same genes for a trait, one from each parent |
| homozygous | has the same genes or alleles for a trait |
| heterozygous | having different genes or alleles for a trait |
| Gregor Mendel | austrian monk - father of modern genetics |
| pea plants | the kind of plant Mendel used in his study of heredity |
| alleles | another name for a gene |
| DNA | deoxyribose nucleic acid |
| XY | letters that stand the male chromosomes |
| XX | letters that stand for the female chromosomes |
| Punnett Square | the chart used to determine possible genotypes of offspring |
