A human cell with two Barr bodies and no Y chromosome is from

Question

Quizplus · Accepted Answer

The presence of two Barr bodies indicates that there are two inactivated X chromosomes. This can only occur in individuals with more than one X chromosome. Since there is no Y chromosome present, it rules out option A and D. Option C would have only one Barr body, as a normal female has two X chromosomes but only one is inactivated. Option E is impossible, as a sperm can only have one Y chromosome. Therefore, the only possible choice is a female with three X chromosomes.

A Human Cell with Two Barr Bodies and No Y