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 In a female human cell with one Barr body, how many active X chromosomes are present?

Option: 1


Option: 2


Option: 3


Option: 4


Answers (1)


In female human cells, one of the two X chromosomes is randomly inactivated, forming a Barr body. Therefore, in a female human cell with one Barr body, one X chromosome is active, and the other X chromosome is inactivated. The active X chromosome is responsible for the expression of X-linked genes in the cell, while the inactivated X chromosome is silenced and condensed into the Barr body.

Option 1 is the correct answer. 


Posted by

Deependra Verma

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