| Monohybrid Cross | Dihybrid Cross |
|---|
| Monohybrid cross is the cross between the two individuals having homozygous genotypes which result in the opposite phenotype. | Dihybrid cross is the cross between the two organisms which are identical hybrids for two traits. |
| Monohybrid cross is used to study the dominance of genes. | Dihybrid cross is used to study the cross of offspring assortment. |
| The phenotypic monohybrid ratio in the F2 generation is 3:1. | Its phenotypic dihybrid ratio in F2 generation is 9:3:3:1. |
| It has a genotypic ratio of 1:2:1 in the F2 generation. | It has a genotypic ratio of 1:2:1:2:4:2:1:2:1 in F2 generation. |
| Example- cross between tall (T) and dwarf (t) pea plant. | Example: A cross between round yellow seeds (RRYY) and wrinkled green seeds (rryy). |