Q. A polygenic trait is controlled by 3 genes A, B and C. In a cross AaBbCc x AaBbCc, the phenotypic ratio of the offsprings was observed as 1 : 6 : m : 20 : m : 6 : 1. What is the value of m?
A) 15
B) 10
C) 24
D) 18
✔ Correct Answer: 15
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