Q. Identify the number of Mendelian disorders from the given list:
Sickle cell anaemia, Colour blindness, Thalassemia, Phenylketonuria, Cystic Fibrosis, Haemophilia,

 1884  204 NTA AbhyasNTA Abhyas 2020Principles of Inheritance and Variation Report Error

Solution:

Cystic fibrosis, haemophilia, sickle cell anaemia, colour blindness, thalessemia and phenylketonuria are Mendelian disorder which are determined by alternation or mutation in the single gene. These disorders are transmitted to the offspring on the same lines as principles of inheritance.