| A | B |
| heredity | the passing on of characteristics from parents to offspring |
| trait | characteristics that are inherited |
| genetics | the branch of biology that studies heredity |
| gamete | male and female sex cells; aka sperm and egg |
| fertilization | the male gamete (sperm) unites with the female gamete (egg) |
| zygote | a fertilized cell |
| pollination | the ransfer of pollen grains from a male reproductive organ to a female reproductive organ in a plant |
| hybrid | the offspring of parents that have different forms of a trait |
| alleles | different forms of genes |
| dominant | the observed trait |
| recessive | the trait that disappeared |
| law of segregation | every individual has two alleles of each gene and when gametes are produced, each gamete receives one of these alleles |
| phenotype | the way an organism looks or behaves |
| genotype | the allele combination an organism contains (the letters) |
| homozygous | two alleles for a trait are the same |
| heterozygous | two alleles for the trait are different |
| law of independent assortment | genes for different traits are inherited independently of each other |