Gujarati
4.Principles of Inheritance and Variation
normal

The phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is

A

$1 : 2 : 1$

B

$1 : 4 : 6 : 4 : 1$

C

$1 : 6 : 15\ 20 : 15 : 6 : 1$

D

$9 : 3 : 3 : 1$

Solution

(b)Ratio $1 : 4 : 6 : 4 : 1$ it is due to two pairs of genes. But if it is due to $3$ pairs of genes, the size ratio shall be $1 : 6 : 15 : 20 : 15 : 6 : 1.$

Standard 12
Biology

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