Barr body is produced due to partial inactivation of one \( \mathrm{X} \)-chromosome in female. ...

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Barr body is produced due to partial inactivation of one \( \mathrm{X} \)-chromosome in female. This is called
(a) dosage compensation
(b) facultative heterochromatisation
(c) Both (a) and (b)
(d) None of the above
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