The person showing Klinefelter's Syndrome has an extra X chromosome making the total count of chromosome to be 47.
Explanation:
Diagram of all the metaphasic chromosome arranged as homologous pairs that shows the shape, size, centromere position and type of chromosome is called a karotype or karyogram.
Karyotype clearly reflects the total number of chromosomes in a cell. thus, a karyotyping of a person showing Klinefelter's syndrome will clearly show the extra X chromosome in the cell.
