Question

Grain colour of wheat is determined by three pairs of polygenes. In cross AABBCC $\times$ aabbcc, progeny resembling either parent in $F_2$ generation is

• A. Half
• B. One third
• C. Less than 5%
• D. 75%

Answer 1

The correct option is C Less than 5%

The $F_2$ generation will give a phenotypic ratio of 1: 6 : 15 : 20 : 15 : 6 : 1. The first and the last digits of the ratio refers to the parental type.