Which of the following diseases in humans belongs to the same category as hemophilia?

$A$ woman with normal vision marries a man with normal vision and they have a color-blind son. What is the genotype of the mother?

$A$ normal-sighted man, whose father was color-blind, marries a woman whose father was also color-blind. They have their first child as a daughter. What is the probability that this child will be color-blind (in $\%$)?

Assertion: Persons suffering from haemophilia fail to produce blood clotting factor $VIII$.
Reason: Prothrombin producing platelets in such persons are found in very low concentration.

$A$ normal woman,whose father was colour-blind,is married to a normal man. The sons would be

Mr. Stevan is suffering from haemophilia and cystic fibrosis. His father is heterozygous for cystic fibrosis. The probability of Stevan's sperm having recessive $X$-linked as well as autosomal allele is