Why are colourblindness and thalassemia categorized as Mendelian disorders ? Write the symptoms of these disease seen in people suffering from them.
( b) About 8 % of human male population suffers from colorblindness whereas only about 0.4% of human female population suffers from this disease .Write an explanation to show how it is possible

Explanation

Colour blindness is a X- linked recessive disorder .Compound to females have two X- chromosome (XX) while males have only on X with y Chromosomes .