Question

Which chromosome remains condense during interphase?

• A. Normal X chromosome
• B. X chromosome of Barr body
• C. Autosomes
• D. None of the above

Answer 1

The correct option is B X chromosome of Barr body

The chromosome that remains condensed during interphase is X chromosome of Barr body. A Barr body is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization. In humans with more than one X chromosome, the number of Barr bodies visible at interphase is always one less than the total number of X chromosomes.

So, the correct answer is option B.