| A | B |
|---|
| heredity | passing of traits from parents to offspring |
| genetics | branch of biology that focuses on heredity |
| alleles | different versions of a gene |
| dominant | the expressed form of a trait |
| recessive | trait that is not expressed when the dominant gene is expressed |
| homozygous | two alleles of a particular gene that are the same |
| heterozygous | alleles of a gene that are different--Rr |
| genotype | the set of alleles that an individual has |
| phenotype | the physical appearance of a trait |
| homozygous dominant | RR |
| homozygous recessive | rr |
