Which one of the following is not the genetic disease?

Detailed Solution:

The correct answer is “Night blindness”.

Night blindness is not a genetic disease. It's often caused by vitamin A deficiency, which can be due to dietary factors or certain medical conditions. While it can be hereditary in some cases, it's primarily an acquired condition.

The other options - Haemophilia, Albinism, and Colour blindness - are all genetic diseases caused by mutations in specific genes.