Klinfelters syndrome is when there is an extra X chromosome in males.
So instead of the normal sex chromosomes for males (XY), a male with klinefelters syndrome will have XXY.
I have included a pic of the karyotype to give you a better idea of what I'm talking about.
Hope this helps! I'm happy to help with any other questions you might have :)
<span>Carbon is the building blocks of all living molecules. With the ability to form carbon-carbon bonds, many different compounds formed into different structures can be used for different purposes such as macromolecules. </span>
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