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NEET UG BIOLOGY MCQ: PRINCIPLE OF INHERITANCE AND VARIATION

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In a polygenic cross

\mathrm{AaBbCc} \times \mathrm{AaBbCc}

, the phenotypic ratio of offspring is

1:6:

'

\mathrm{X}

'

:20:\mathrm{X}:6:1

. What is the value of '

\mathrm{X}

'?

View answer and explanation

Correct option: C

15

Option C (15) is correct because in a polygenic cross, the coefficients of the binomial expansion represent the phenotypic ratios.

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