| A | B |
| Gregor Mendel | Father of Genetics |
| Heredity | The passing of traits from parent to offspring |
| Trait | A characteristic passed on to offspring |
| Phenotype | An organism's physical appearance |
| Genotype | An organism's gentic makeup or allele combinations |
| Alleles | Different forms of the same gene |
| Dominant | An allele whose trait always shows up in the organism when the allele is present |
| Recessive | An allele whose trait is masked or covered up when the dominant allele is present |
| Homozygous | When two alleles are the same (2 capitals or 2 lower case letters) |
| Heterozygous | Has 2 different alleles for a trait (one capital and one lower case letter) |
| P Generation | Parent generation |
| F1 Generation | First filial generation (offspring) |
| Punnett Square | A chart that shows all of the possible combinations of alleles that can result from a genetic cross to determine the probability of a particular outcome |
| Genes | The factors that control traits; located on chromosomes |