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  4. If somatic cells of a human male contain single Barr body, the genetic composition of the person would be

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Q. If somatic cells of a human male contain single Barr body, the genetic composition of the person would be

Chhattisgarh PMTChhattisgarh PMT 2005

Solution:

If somatic cells of a human male contain single Barr body, the genetic composition of the person would be $XXY$.
Presence of one Barr body indicates that there will be two $X$-chromosomes in genetic composition of the person.