| A | B |
|---|
| genotype | the appearance of an organism's genes |
| genetics | the study of heredity |
| heredity | the passing of traits to offspring |
| traits | any characteristic that is passed from generation to generation |
| Punnett Square | tool used to predict the results of a genetic cross |
| gametes | sex cells such as egg or sperm |
| sexual reproduction | reproduction involving two parents |
| homozygous | two of the same alleles; "pure" alleles |
| heterozygous | two different alleles |
| phenotype | the physical appearance of an organism |
