Distinguish Between : Monohybrid cross and Dihybrid cross.

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answered Oct 20, 2021 by Mishika (44.7k points)
selected Oct 20, 2021 by ShanayaBasu

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Monohybrid cross	Dihybrid cross
1. Crosses involving a single pair of alleles are called monohybrid crosses.	1. Crosses involving two pairs of alleles are called dihybrid crosses.
2. Monohybrid crosses yield a phenotypic ratio of 3 : 1 in the F₂ generation.	2. Dihybrid crosses yield a 9 : 3 : 3 : 1 ratio in F₂ generation.
3. Monohybrid crosses yield 1 : 2 : 1 genotypic ratio in F₂ generation.	3. Dihybrid crosses yield 1 : 1 : 2 : 2 : 4 : 2 : 2 : 1 : 1 genotypic ratio in F₂ generation.
4. Application of the law of independent assortment is not applicable in monohybrid crosses	4. Application of the law of independent assortment is applicable in dihybrid crosses.