A male human with a Barr body in his somatic cells exhibits

Barr body represents the inactivated extra X chromosome. It is usually present in female humans (XX) but absent in male humans (XY).Klinefelter’s Syndrome is a  genetic disorder which is caused due to the presence of an additional copy of X-chromosome resulting into a karyotype of 47, XXY. Such an individual has overall masculine development, however, the feminine development (development of breast, i.e., Gynaecomastia) is also expressed. Such individuals are sterile.