| A | B |
|---|
| monohybrid cross | using one trait and figuring out the possibilities from offspring |
| dihybrid cross | using two traits and figuring out the possibilities from the offsrping |
| heterozygous | the two genes for a trait are different (i.e., Aa) |
| homozygous | the two genes for a trait are the same (i.e., AA or aa) |
| dominant | an allele (gene) that hides another when they are combined |
| recessive | the allele (gene) that is hidden by a dominant |
| alleles | the different possibilities for a single trait |
| genotype | the combination of two genes an individual has |
| phenotype | what the trait is expressed as because of those two genes (what an organism looks like) |
| gametes | sex cells with 1/2 the number of chromosomes (N) - one from each pair |
| fertilization | two gametes, each from the opposite sex combine |
| heredity | the passing of characteristics (genes or traits) from parents to offspring |
| genetics | the science of heredity |
