I was on youtube and found a video of parents talking about there experience. They had a child with trisomy 18 which is also known also Edwards syndrome. Doctors told them that this disorder was incompatible with life, hearing this news they decided to carry the pregnancy to term, they did not speak of the defects their child had so i decided to search for them. I found that there are three types of trisomy 18 there is full, partial and mosaic. In full trisomy 18 the individual has three 18th chromosome this occurs in 95% of all cases. Partial trisomy 18 can be caused by hereditary, in this case a part of the 18 chromosome becomes attached to another chromosome. Mosaic trisomy 18 occurs when an extra 18th chromosome is present in some but not all of the cells in the body. Physical defects include problems with the heart and kidney. Part of the intestinal track is outside the stomach, the esophagus does not connect to the stomach, there is excess amniotic fluid, clenched hands pocket of fluid in the brain, rocker bottom feet, delayed growth, small jaw, small head, low-set ears and a strawberry shaped head.
After research i decided to watch more videos and found that most children die very young however there were cases where effected individuals survived. There is a small number of females that made it to there thirties.
http://www.trisomy18.org/site/PageServer?pagename=whatisT18_whatis
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