Down syndrome

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by LittenP0G4
Last updated 6 years ago

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Down syndrome

More Facts on Down Syndrome

Different Types

Standard Trisomy 21:When the extra chromosome 21 comes from either the egg or the sperm cell; 90-95% of down syndromeTranslocation:Caused when a piece of chromosome 21 is located on another chromosome, 3-5% of down syndromeMosaicism:When a person has a mix of cells, containing 46 chromosomes and some containing 47 chromosomes; 2-5% of down syndrome


~Flattened back of head~ Distinct facial features: flat face, small ears, slanting (almond-shaped) eyes, small mouth~Slightly protruding tongue~Tiny white spots on iris of eye~Short neck, arms, and legs~Horizontal crease in palm of hand~Shortened fingers and toes~Enlargened gap between first two toes~Low muscle tone and loose joints~Excessive flexibility~Below-average intelligence~Heart, intestine, ear, or breathing problems

Down syndrome is not inherited, it is caused by a mistake in cell division during the development of the egg, sperm, or embryo.

If the father is the carrier, the risk is 3%.If the mother is the carrier, the risk is 10-15%.

Increased Risks of:Heart defectsLeukemiaInfectious dieasesDementiaSleep apneaObesity

Famous People Whose Children Have Down Syndrome

Sarah Palin - politicanJohn C. McGinley - actor (Scrubs)Julie Newmar - actress (Catwoman in 1960's)Neil Young - singer-songwriter/musician


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