| A | B |
|---|
| homozygous | having identical alleles for a trait |
| heterozygous | having two different alleles for a trait |
| allele | one of two or more alternate forms of a gene |
| genotype | describes the genes of an organism |
| phenotype | describes the appearance of a trait |
| dominant | allele that can cover up a recessive allele |
| probability | chance of an event happening |
| Punnett square | a way to predict the different type of offspring in a cross |
| heredity | passing of traits from one generation to the next |
| incomplete dominance | when two different alleles together produce an intermediate (blended) phenotype |
| co-dominance | both genes in a heterozygote are expressed |
| polygenic inheritance | when more than one set of alleles control a trait |
