what is the genotypic ratio in dihybrid cross ?

A cross that involves two pairs of contrasting traits is termed as dihybrid cross. For example ross between pea plant with round yellow seeds (RRYY) and wrinkled green seeds (rryy). This is shown in the diagram below


Phenotypic ratio − 9:3:3:1
Genotype ratio - 1:2:2:4:1:2:1:2:1  
 

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9:3:3:1

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The genotypic ratio in hybrid cross is

9:3:3:1

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