Question

In Barr-body (sex-chromatin)of a normal female:

• A. one of the X-chromosome of paternal side becomes inactive to form Barr-body
• B. Y-chromosomes form Barr-body
• C. heterochromatin condense near centre of nucleus to form Barr-body
• D. one of the X-chromosome of maternal side becomes inactive and form Barr-body near nuclear membrane

Answer 1

Answer: (D)

Correct answer is (d) one of the X-chromosome of maternal side becomes inactive and form Barr-body near nuclear membrane