DOWN SYNDROME is a disorder when someone has a extra chromosome it occurs when sperm or egg doesn't separate. It isn't caused for no reason it happens in random babies.
KLINEFELTER SYNDROME is a disorder when males are born with more X chromosomes which then makes them have unusual traits. It occurs randomly in males during the forming of reproductive cells.
TURNER SYNDROME is a disorder when females are missing a X chromosomes. Which causes the neck to have extra skin on the neck and more not normal traits. It randomly occurs in females during cell division.
COLOR BLINDNESS is when someone can't distinguish between certain colors, like they see a more different color than what appears. Its usually a genetic condition which is passed down from your parents. More men are affected with it than man.