| A | B |
|---|
| Aa | heterozygous (when there is a combination of capital and lowercase letter) |
| aa | homozygous (When there is two letters of the same type: capital and capital or lowercase and lowercase) |
| brown hair | phenotype: something you can see. |
| A trait in code form that you cannot see. (Ex: Rr) | genotype |
| allele | a specific trait that can be observed; ex: red hair |
| gene | a general trait that all possess; Ex: hair color, handedness, eye color. |
| The "father" of genetics | Mendel |
| The study of heredity | genetics |
| gene | part of the DNA code on a chromosome. |
| Parents pass traits through their _________. | sex cells |
