Q. Pick out the correct statements. I.Haemophilia is a sex-linked recessive disease II.Down’s syndrome is due to aneuploidy III.Phenylketonuria is an autosomal dominant gene disorder IV.Phenylketonuria is an autosomal recessive gene disorder V.Sickle cell anaemia is an X-linked recessive gene disorder
A) I , III and V are correct
B) I and III are correct
C) II and V are correct
D) I , II and IV are correct
Explanation
Haemophilia or Bleeder’s disease is a sex linked (X-linked recessive) disease. Down’s syndrome is caused due to trisomy of chromosome 21 (i.e., hyperploidy type of aneuploidy). Phenylketonuria is an autosomal recessive gene disorder. Sickle cell anaemia in human, is also inherited as an autosomal recessive disorder.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.