Haemophilia is more commonly seen in human males than in human females because
This disease is due to an $X$-linked dominant mutation
A grater proportion of girls die in infancy
This disease is due to an $X$-linked recessive mutation
This disease is due to a $Y$-linked recessive mutation
Select the correct match.
What are all the chances of colour blind daughter and sons being born in a marriage of normal man marrying a normal woman, whose father was colour blind
Given below is a highly simplified representation of the human sex chromosomes from a karyotype.
The genes $a$ and $b$ could be of
Which of the following is a sex-linked character
Describe Mendelian Disorder.