| A | B |
|---|
| genetics | study of how traits are inherited |
| genes | code for traits (proteins) |
| DNA | molecule that controls organism's traits |
| genotype | genes inherited from parents |
| phenotype | physical, observable characteristics |
| dominant | stronger gene |
| recessive | weaker gene |
| Mendel | father of genetics |
| alleles | different forms of a gene |
| heterozygous | inheriting two different genes for a trait |
| homozygous | inheriting two of the same genes for a trait |
| true or pure | means the same as homozygous |
| hybrid | means the same as heterozygous |
| P | symbol for parental generation |
| F1 | symbol for first filial generation (1st generation after parents) |
| F2 | generation resulting from a cross between F1 individual and an other F1 offspring |
| monohybrid | cross involving one trait |
| dihybrid | cross involving two traits |
