Question

difference between monohybrid cross and dihybrid cross
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Answer 1

The difference between monohybrid cross and dihybrid cross is as follows :-

Monohybrid Cross -

• This occurs between two pure organisms to study the inheritance of a single pair of alleles
• Phenotypic monohybrid ratio in f2 generation is 3:1
• Genotypic ratio in f2 is 1:2:1

Dihybrid Cross -

• This occurs between two pure organisms of a species to study the inheritance of two pairs of alleles.
• Phenotypic Dihybrid ratio in f2 generation is 9:3:3:1
• Genotypic ratio in f2 is 1:2:1:2:4:2:1:2:1