What is the genotypic ratio in the F₂ of a monohybrid cross with complete dominance?
Correct answer A. 1 : 2 : 1
Explanation
Tt × Tt gives 1 TT : 2 Tt : 1 tt. Because TT and Tt look alike, the phenotypic ratio is 3 : 1 though the genotypic ratio is 1 : 2 : 1.
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