differentiate between down syndrome and klinefelter's syndrome mention two similarities between them

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Refer below for above asked query:-

Down syndrome occurs due to presence of an extra chromosome 21 , thus there will be a total of 47 chromosomes.
Down syndrome is often called as Trisomy 21 , because all the cells have three chromosomes and this is known as Trisomic condition.
The symptoms here, include abnormal facial features, dwarfness, heart defects, and slow growth.


Klinefelter syndrome, also known as the XXY condition, is a term used to describe males who have an extra X chromosome in most of their cells. Instead of having the usual XY chromosome pattern that most males have, these men have an XXY pattern
 Even though all men with Klinefelter syndrome have the extra X chromosome, not every XXY male has all of those symptoms. It results in feminized male which means male with female characters. 
Symptoms are   Inattentiveness, Breast enlargement in men, Delayed puberty ,Flaccid muscles etc..


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