Klinefelter syndrome is a genetic disorder or a chromosomal condition that only affects males. Males with Klinefelter syndrome have an extra X chromosome, such that they have two or more X chromosomes.
<em><u>Normally, men have a normal arrangement which is 46 XY, but those with the condition will have 47 XXY. </u></em>
<em><u>This chromosomal abnormality mat be shown in a karyotype which refers to the number and appearance of chromosomes in the nucleus of a eukaryotic cell.</u></em>