| A | B |
|---|
| heredity | the passing of traits from parents to young |
| dominant trait | a trait that prevents the showing of another trait |
| genotype | the gene combination in an organism |
| incomplete dominance | neither trait is dominant nor recessive |
| Y chromosome | the chromosome found only in males |
| genetics | the scientific study of heredity |
| recessive trait | a trait that is hidden by a dominant trait |
| hybrid | one dominant and one recessive trait (Tt) |
| meiosis | cell division producing gametes |
| purebred dominant | two dominant traits (TT) |
| purebred recessive | two recessive traits (tt) |
| replication | DNA doubling |
| gene | a section of the chromosome |
| phenotype | the inherited appearance of an organism |
| gamete | a cell with half the chromosomes |
| X chromosome | two of these make a female genotype |
| mutation | a change in the DNA pattern |
| Punnett Square | a chart showing genetic combinations |
| self pollination | crossing an organism with itself |
| cross pollination | crossing one organism with another |
| Gregor Mendel | Austrian monk who discovered the principles of heredity |
| trait | a characteristic |
| DNA | the chemical language of heredity |
| chromosome | a single strand of genetic material |
| selective breeding | the process of choosing and mating organisms with desired traits |
| genetic engineering | taking genes from one organism and placing them in another |
| male | XY |
| female | XX |
| colorblindness | one of the traits carried on the X chromosome |
