$\begin{array}{1 1} \text{a. 25% female progenies carry the genes for both haemophilia and colour blindness} \\ \text{b. 25% male progenies carry only the gene for haemophilia} \\ \text{c. 25% female progenies carry only the gene for colorblindness} \\ \text{d. All of the above} \end{array} $