If x is the phenotypic ratio of monohybrid cross for trait A and y is the phenotypic ratio of monohybrid cross for trait B, what would be the phenotypic ratio of a dihybrid cross involving traits A and B?(a) xy(b) x + y(c) x^2 + y^2(d) (xy)^2I have been asked this question in a national level competition.My query is from Inheritance of Two Genes-2 in section Principles of Inheritance and Variation of Biology – Class 12

If x is the phenotypic ratio of monohybrid cross for trait A and y is

1.	If x is the phenotypic ratio of monohybrid cross for trait A and y is the phenotypic ratio of monohybrid cross for trait B, what would be the phenotypic ratio of a dihybrid cross involving traits A and B?(a) xy(b) x + y(c) x^2 + y^2(d) (xy)^2I have been asked this question in a national level competition.My query is from Inheritance of Two Genes-2 in section Principles of Inheritance and Variation of Biology – Class 12
Answer» The correct ANSWER is (a) xy The explanation: For a dihybrid cross involving two traits, the independent LAW of assortment states that the traits would SEGREGATE independently of each other. THUS, the phenotypic ratio would be xy.

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