| A | B |
| trait | a specific characteristic of an individual |
| gene | a specific location on a chromosome that controls a certain triat |
| dominant trait | a trait that covers up another and is expressed most often |
| pedigree | a diagram that shows the history of a trait from one generation to the next |
| pure recessive | an example is bb |
| Punnett Square | a diagram that shows the possible combinations of gene pairs for a given trait |
| recessive trait | a trait that can be covered up or seems to disappear |
| random occurence | an equal chance that a trait will appear or not appear |
| heterozygote | example is Bb |
| pure dominant | example is BB |
| bases | compounds that make up the steps for DNA |
| nucleus | part of the cell where chromosomes are found |
| incomplete dominance | neither gene is dominant for a given trait |
| sex linked trait | occurs more often in males |