The correct option is A 1-a, 2-b, 3-d, 4-c
Sickle cell anemia is an example of pleiotropy.
Colour blindness is a sex linked disease.
Beard in males is a sex limited trait.
A mutation in the tyrosinase gene causes albinism.
Hence, the correct match is:
(1)Pleiotropy(a)Sickle cell anemia(2)Sex linked disease(b)Colour blindness(3)Sex limited trait(d)Beard in males(4)Tyrosinase(c)Albinism