Question

Albinism is due to non synthesis of melanin on account of absence of
A. Melanase
B. Luciferase
C. Tyrosinase
D. Lysine

Answer 1

Albinism is a congenital disease which is generally seen in humans, where it occurs by either complete or partial absence of pigment in eyes, skins, and hair, where the albinism is associated with several vision defects, and at the same time lack of melanin pigment makes those people to susceptible for skin burns and cancers.

Complete answer: Albinism mainly occurs because of the recessive gene of that trait, and it is due to the absence or defect of the enzyme tyrosinase, which is a copper-containing enzyme that involves in the production of melanin and the person with a complete absence of melanin pigment is called an albino.
Albinism is mainly of two types, the first one is oculocutaneous which affects the eyes and skin and hair, and the other one is ocular which affects the only eye.
The people with ocular Calvinism the color of the iris of the eye may vary from blue to green to even brown color.
The people with albinism are generally healthy as normal ones regarding their growth and development.
But they may obtain some diseases mainly that affect the eyes, such as Photophobia which decreases visual activity due to decreasing in the light scattering in the eye, and they also obtain some other things such as Nystagmus, amblyopia, optic nerve occlusion, and hypoplasia.
As they do not have pigmentation they are easily susceptible to sunburns and their immunity is also a little compromised.
So the correct option is C.

Note: Tyrosinase is the enzyme which is very important in the synthesis of the pigment melanin, where the absence of this enzyme results in absence of melanin, that causes the condition called albinism, and for this condition there is no particular treatment except in change in life style and adjustment in life style.