Class 12 NEET Biology Principles of Inheritance and Variation Questions Part 1

Both diseases are produced by a recessive gene which lies on the X-chromosomes. A woman having both gene for haemophilia on one Xchromosome and gene for colour blindness on another X-chromosome will have genotype XhXc Thus, progeny includes 50% haemophilic daughters (carrier) and 50% colour blind daughters (carrier).