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  1. down syndrome is a genetic anomoly that occurs in 1 out of 800 live births...age, though studies have shown that the risks increase with age. down syndrome is caused by an excess 21st chromosome. and affects all...

    6 Answers · Pregnancy & Parenting · 21/08/2007

  2. down syndrome is a random genetic anomaly that happens in 1 out of 730 live ...increase. However, the most women having children with down syndrome are under 35 yrs old simply because they are the largest...

    7 Answers · Education & Reference · 28/10/2008

  3. Down Syndrome which is also medically called trisomy 21 is... at greater risk of bearing a child with Down syndrome than younger women. One in 1500 ...

    9 Answers · Health · 24/03/2007

  4. What is Down syndrome? Down syndrome is a relatively common birth...abnormality? The chromosome abnormality that causes Down syndrome is trisomy 21, an extra copy of chromosome number...

    4 Answers · Health · 16/05/2007

  5. ... Master Definition Down syndrome is the most common cause of mental retardation.... The extra chromosome in Down syndrome is labeled number 21...

    6 Answers · Health · 13/04/2008

  6. Down syndrome is a chromosomal disorder caused by the presence of all or part of an extra...as a chromosome 21 trisomy by Jérôme Lejeune in 1959. Often Down syndrome is associated with some impairment of cognitive ability and physical growth...

    2 Answers · Education & Reference · 07/05/2008

  7. "what does down syndrome do to a child/baby?'' what.... the most common form of down syndrome is Trisomy 21 (90... not think of him as a down syndrome child....that is just something...

    6 Answers · Pregnancy & Parenting · 06/07/2008

  8. Down syndrome is a intellectual disability caused by an extra copy of chromosome 21. ..., that would rule out trisomy 21. That's why many people with down syndrome have abnormal parts of their body. They usually have a ...

    2 Answers · Education & Reference · 10/05/2013

  9. Down syndrome occurs when an individual has three, rather than two, copies of...Down syndrome. • There are more than 400,000 people living with Down syndrome in the United States. • A few of the common physical ...

    3 Answers · Education & Reference · 29/01/2011

  10. Down Syndrome is Not a mutation at all. It'...from woman either in their early 20s or late 40s. Down Syndrome is caused when there are two ...

    6 Answers · Health · 29/03/2011

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