Question

A woman heterozygous for color blindness marries a color blind man. What will be the ratios of carrier daughters, color blind daughters, normal sons and color blind sons in F1 generation?

• A. 1:2:2:1
• B. 2:1:1:2
• C. 1:1:1:1
• D. 1:1:2:2

Answer 1

The correct option is C

1:1:1:1

Ratio

$\begin{array}{ccc}& Genotype& F_{1}ratio\\ Carrierdaughter& X{X}^C& 1\\ Colorblinddaughter& X^C{X}^C& 1\\ Normalson& XY& 1\\ Colorblindson& X^{C}Y& 1\end{array}$