If a man who is colour blind marries a women, who is pure normal for colour vision, the chances of their sons have colour blindness is

Which of the following most appropriately describes haemophilia?

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

A normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion

Following pedigree chart shows

Describe Mendelian Disorder.