| A | B |
|---|
| Genetics | The branch of biology that studies heredity. |
| Traits | Inherited characterisitics. |
| Fertilization | The uniting of male and female gametes. |
| Allele | An alternative or different form of a gene. |
| Dominant | The visible, observable trait of an organism that masks a recessive form of the trait. |
| Recessive | The hidden trait of an organism that is masked by a dominant trait. |
| Homozygous | When the two alleles for a trait are the same. |
| Heterozygous | When the two alleles for a trait are different. |
| Genotype | The gene combination an organism contains. |
| Phenotype | The way an organism looks. |
| Law of independent assortment | Genes for different traits are inherited independently of each other. |
| Monohybrid cross | A cross involving only one trait. |
| Dihybrid cross | A cross involving two different traits. |
