Question

Which of the following statements are correct with respect to chromosomal disorders?

• A. Are the disorders created by an imbalance in the chromosomes
• B. Mainly determined by disorders in a single gene.
• C. Klinefelter’s syndrome is caused due to the presence of an additional copy of Y-chromosome.
• D. Inheritance of a condition like phenylketonuria as an autosomal recessive trait.

Answer 1

The correct option is C Klinefelter’s syndrome is caused due to the presence of an additional copy of Y-chromosome.

Chromosomal disorders are caused by an imbalance in chromosomal arrangement and Klinefelter’s syndrome is an example of such disorder.