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Question
Differentiate between the following -
Monohybrid and Dihybrid.
Solution
| Monohybrid | Dihybrid |
| A cross between two pure organisms is used to explore the inheritance of a specific pair of alleles. | A cross between two pure organisms of the same species is used to explore the inheritance of allele pairs. |
| The F2 generation produces a phenotypic monohybrid ratio of 3 : 1. | The F2 generation produces a phenotypic dihybrid ratio of 9 : 3 : 3 : 1. |
| It generates a genotypic ratio of 1 : 2 : 1 in F2. | It produces a genotypic ratio of 1 : 2 : 1 : 2 : 4 : 2 : 1 : 2 : 1 in F2. |
| For example, the cross between tall and dwarf pea plant is a monohybrid cross. | For example, the cross between pea plants having yellow wrinkled seed with those having green round seeds is a dihybrid cross. |
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