| A | B |
| heredity | the study of how traits are passed from parents to offspring |
| genetics | the study of biological inheritance |
| fertilization | the combining of sperm and egg cells |
| trait | a specific characteristic |
| genes | factors passed from parents to offspring that determine an individual’s characteristics |
| alleles | the different forms of the same gene |
| dominant | the stronger of two alleles; only one is required to show the dominant phenotype |
| recessive | the weaker of the two alleles; two are required to show the recessive phenotype |
| gametes | sperm for males and eggs for females |
| probability | the likelihood that an event or genetic combination will happen |
| homozygous | two of the same alleles are present; GG or gg |
| heterozygous | two different alleles are present; Gg |
| phenotype | the physical display of a trait |
| genotype | the genetic make-up concerning a trait |
| monohybrid cross | a genetic cross addressing only one trait |
| dihybrid cross | a genetic cross addressing two traits |
| self-pollination | using the pollen from plant A to fertilize the eggs of plant A |
| cross-pollination | using the pollen of plant A to fertilize the eggs of plant B |