| A | B |
| DNA | Deoxyribonucleic acid |
| Allele | One member of a gene pair |
| Mendel | Father of Genetics |
| Genotypes | Actual gene makeup (letters) |
| Traits | Physical characteristics that are inherited |
| Incomplete Dominance | Neither of the genes in a pair masks the other |
| Chromosomes | Rod-shaped structures found in the nucleus of a cell |
| Dominant | Trait that masks another trait |
| Phenotype | Physical appearance of a trait |
| Pea Plants | Type of plant used in Mendel's experiments |
| Heterozygous | Gene pair that consists of a dominant allele and a recessive allele |
| First Filial | First generation after the P generation |
| Second Filial | Second generation after the P generation |
| Geneticist | Scientist who studies heredity |
| Recessive | Trait that seems to disapper when two different genes are present |
| Law of Independent Assortment | Each gene pair is inherited independently of other gene pairs for other traits |
| Hydrid | Another term for a heterozygous gene pair |
| Purebred | Another term for a homozygous gene pair |
| Homozygous | Gene pair that consists of two dominant or two recessive alleles |
| P Generation | Also known as the parental generation |