| A | B |
|---|
| Genetics | the study of heredity |
| Fertilization | the joining of male and female reproductive cells |
| True-breeding | organisms that reproduce offspring identical to themselves (TT or tt) |
| Trait | a specific characteristic such as color or height |
| Hybrid | crosses between organisms with different traits (Tt) |
| Gene | chemical factors passed from one generation to the next |
| Allele | different forms of genes |
| Segregation | separation of alleles |
| Gametes | sex cells |
| Probability | the likelihood that a particular event will occur |
| Punnett Square | used to predict and compare genetic variations that will result from a cross. |
| Homozygous | organisms that have two identical alleles for a particular trait (purebred) |
| Heterozygous | organisms that have two different alleles (hybrid) |
| Phenotype | physical characteristics |
| Genotype | genetic make-up |
