ZoologyWhich one of the following is an autosomal recessive Mendelian disorder?

Which one of the following is an autosomal recessive Mendelian disorder?

A
Myotonic dystrophy
B
Down’s syndrome
C
Klinefelter’s syndrome
D
Cystic fibrosis

Solution:

Myotonic dystrophy - Autosomal dominant disorders
Cystic fibrosis - Autosomal recessive disorders
Down’s syndrome - Autosomal chromosomal disorder
Klinefelter’s syndrome - Allosomal chromosomal disorder