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  4. The number of genotypes produced when individuals of genotype ‘YyRrTt’ are crossed with each other is

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Q. The number of genotypes produced when individuals of genotype $‘YyRrTt’$ are crossed with each other is

Principles of Inheritance and Variation

Solution:

• Total number of genotypes $= 3^n = 3^3 = 27$
• $n$-type of cross (for monohybrid $n = 1$, for dihybrid $n = 2$ and....so on).