Two types of breeding methods are used to know the working of gene and analyze how certain traits are inherited from grandparents and parents. They are monohybrid and dihybrid. A monohybrid cross is defined as the cross happening in the F1 generation offspring of parents differing in one trait only. A dihybrid cross is a cross happens F1 generation offspring of differing in two traits. Below are the differences between monohybrid and dihybrid based on the genotype, phenotype, cross test ratio, etc.
Difference Between Monohybrid And Dihybrid
| Monohybrid | Dihybrid |
| Means | |
| Mono refers to single and hybrid means mixed breed | Di refers to two or double and hybrid means breed |
| Cross | |
| Monohybrid cross is used to study the inheritance of a single pair of alleles | Dihybrid cross is used to study the inheritance of 2 different alleles |
| Used to study | |
| the dominance of genes | Offspring assortment |
| Genotype ratio | |
| 1:2:1 | 1:2:1:2:4:2:1:2:1 |
| Phenotype ratio | |
| 3:1 | 9:3:3:1 |
| Ratio cross test | |
| -1:1 | -1:1:1:1 |
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