NEET Biology question
A medical technician, while observing a human blood smear under the microscope notes the presence of a Barr body close to the nuclear membrane in the WBC. This indicates that the person under investigation is a
Answer: (C)
Solution
A Barr body forms from one of the two X-chromosomes becoming inactivated in each somatic cell, which occurs only when more than one X-chromosome is present; its presence (one Barr body) indicates a normal female (XX),
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