| A | B |
|---|
| punnett square | diagram used to organize all possible offspring combinations |
| albinism | condition that causes colorless hair, skin, and eyes |
| genes | instructions for traits passed to offspring from parents |
| phenotype | an organism's appearance |
| genotype | genetic makeup formed from both inherited alleles together |
| heterozygous | a plant with one dominant and one recessive gene |
| homozygous | a plant with either two dominant or two recessive genes |
| heredity | the passing of genetic traits from parent to offspring |
| dominant trait | the trait observed in the first generation when parents that have different traits are bred |
| recessive trait | a trait that reappears in the second generation after disappearing in the first |
| probability | the likelihood that a possible future event will occur in any given instance of the event |
| homologous | chromosomes that have the same sequence of genes and the same structure |
| meiosis | process in cell division during which the number of chromosomes decreases to half the original producing sex cells |
| sex chromosome | one of the pair of chromosomes that determine the sex of a person |
| pedigree | a diagram that shows teh occurrence of a genetic trait in several generations |
| chromatid | exact duplicate of chromosome |
| cell membrane | forms around each new cell during meiosis |
| threadlike | how chromosomes look before meiosis |
| mitosis | process in which the nucleus divides only once |
