Select the correct sentence for colour blindness ?
Autosome linked recessive disorder
Mutation in certain gene present in the $21^{th}$ pair chromosomes
Formation of abnormal haemoglobin molecules
It occurs in about $8$ percent of male only about $0.4$ percent of female
One of the genes present exclusively on the $X$-chromosome in humans is concerned with
Describe pedigree analysis and draw its symbols.
Sex linked disease is
If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?
Which of the following is not correct option for Phenylketonuria ?