Human eye and colourful world Full detailed explanation/Support material /based on latest syllabus

Which pair of features represents polygenic inheritance ? (a) Human eye colour and sickle cell anaemia (b) Hair pigment of mouse and tongue rolling in humans (c) ABO blood groups in humans and flower colour of Mirabilis jalapa (d) Human height and skin colour

(a) Why are colour blindness 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.

A narrow beam of light passes through a slab obliquely and is then received by an eye. The index of refraction of the material in the slab fluctuates slowly with time. How will it appear to the eye? The twinkling of stars has a similar explanation.