Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Principles of Inheritance and Variation

Question:
Read the given passage and answer the questions that follow :-
Broadly, genetic disorders can be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration and mutation in the single gene. These disorders are mainly transmitted to the offspring on the same lines. The pattern of inheritance of Mendelian disorders can be easily traced in a family. The chromosomal disorders on the other hand are caused due to absence or excess or abnormal arrangement of one or more chromosomes.
Select the odd one out of the given Mendelian disorders.
Options:
Phenylketonuria
Sickle-cell Anaemia
Thalassemia
Haemophilia
Correct Answer:
Haemophilia
Explanation:
Phenylketonuria, Sickle-cell Anaemia , Thalassemia are autosomal recessive Mendelian disorders while Haemophilia is sex linked recessive Mendelian disorder.