| A | B |
| Chromosome | a rod-shaped structure that contains DNA and is found in the nucleus of a cell |
| Gene | The information about a trait that a parent passes to its offspring |
| Genetics | The study of heredity |
| Heredity | The passing of traits from parents to offspring |
| Mutation | a change in a gene |
| Base | a molecule found in DANA that is used to store information |
| Replicate | To make a copy of itself |
| Mitosis | The process that results in two cells identical to the parent cell |
| Meiosis | The process that results in sex cells |
| Evolution | the changes in a population over time |
| Adaptation | a Trait that enables an organism to live in a certain environment |
| Vestigial Structure | a body part that appears to b e useless to an organism but was probably useful to the organism's ancestors |
| Homologous structures | Body parts that are similar in related organisms |