Haemophilia is caused due to the lack of:

$A$ normal-visioned woman, whose father is colour-blind, marries a normal-visioned man. What would be the probability of her sons and daughters being colour-blind? Explain with the help of a pedigree chart.

What is the phenotype of the offspring of a color-blind woman and a normal-vision man?

What is the cause of sickle cell anemia?

If a normal woman marries a colourblind man,what will be the phenotype of their children?

What are both Sickle-cell anemia and Huntington's chorea?