| A | B |
|---|
| trait | A physical characteristic. |
| genetics | The study of heredity. |
| gene | The units of heredity. |
| dominant | The trait that is expressed when two different genes for the same trait are present. The stronger of two traits. |
| recessive | The trait that seems to disappear when two different genes for the same trait are present. The weaker of two traits. |
| hybrid | An organism that has two different genes for a trait. |
| incomplete dominance | A condition in which neither of the two genes in a gene pair masks the other. |
| phenotype | Physical appearance. |
| genotype | The gene makeup of an organism. |
| stamens | The male reproductiive structures of a pea plant. |
| Mendel | The father of Genetics. |
| a capital letter | The sysmbol of a dominant gene is written as a _________. |
| all short | When Mendel crossed two short pea plants, the offspring were _________________. |
| flower color | Mendel did not study this pea plant trait. |
| segregation | Gene pairs for a trait separate according to the law of _____________. |
| quickly | The reason that Mendel chose to study pea plants if because they reproduce __________. |
| self-pollination | The process by which a plant pollinates itself. |
| percentage | Probability is usually expressed as a fraction or as a ____________. |
| geneticists | Scientists that study heredity are called_________? |
