Although there are some miraculous exceptions, the medical community considers trisomy 18 syndrome to be "incompatible with life" (as opposed to less serious chromosomal abnormalities, like Turner syndrome). My old college roommate gave birth to a child with this terrible condition. Because she was...
Trisomy21, also referred to asDown Syndrome, is a chromosome abnormality caused by an extra copy of chromosome 21. Individuals with this condition usually havemental retardation, although other health issues may be present as well. This is a common birth defect, appearing in about one out of e...