| A | B |
|---|
| trait | physical characteristic passed from parent to offspring |
| heredity | passing of traits from one generation to another |
| chromosome | structure in the nucleus that contains genetic information |
| gene | a segment of a chromosome that determines the inheritance of a trait |
| allele | one gene from a gene pair for a trait |
| genotype | the gene pair an organism has for a particular trait |
| phenotype | the physical trait that an organism has based on the genotype for that trait |
| dominant trait | trait that will always mask or cover up a recessive trait |
| recessive trait | a trait that will always be masked or covered up by a dominant trait |
| T | a dominant allele |
| t | a recessive allele |
| Tt | a hybrid genotype |
| rr | a purebred genotype |
| purebred | two alleles for a trait are the same |
| hybrid | two alleles for a trait are different |
| monohybrid | a genetic cross for one trait (ex. Bb X BB) |
| inherited trait | a physical trait that is inherited genetically from your parents |
| environmental factor | factor that may influence the physical characteristics of an organism |
| Punnett square | tool for determining genotypes and phenotypes of a genetic cross |
| eye color | inherited trait |
| scar | a trait that is not inherited but is the result of environmental factors |
