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- 1866: John Langdon Down, a British physician, published a scholarly work describing the characteristics a person with the syndromeNDSS: Information
- John Landon Down is recognized as the "father" of the syndromeNDSS: Information
- 1959: Jerome Lejeune, a French physician, identified Down syndrome as a chromosomal anomalyNDSS: Information
- Down the recognition as the "father" of the syndromeNDSS: Information
- Down syndrome individuals have 47 chromosomes present in each cell of individuals instead of the usual 46NDSS: Information
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Down syndrome, or Down's syndrome, is a genetic disability that is caused by an extra partial or complete chromosome which results in mental retardation and other problems. John Langdon Down, a British physician was the first to describe the condition as a distinct and separate entity.
More than 400,000 people in the U.S., approximately 1 out of every 733 live births, have Down syndrome and affects people of all ages, races and economic levelsNDSS: Information
Tests During Pregnancy
- Recommended between 11th and 14th week of pregnancyMayo Clinic: Tests and Diagnosis
- Diagnostic tests that can identify or confirm Down syndromeMayo Clinic: Tests and Diagnosis
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Down Syndrome Questions
%of mental retardation in downs syndrome 1 Answer"Most individuals with Down syndrome have mental retardation in the mild (IQ 50–70) to moderate (IQ 35–50) range, with individuals having Mosaic Down syndrome t... read more
How would you feel if you were pregnant and found out you were carrying a baby with Down's Syndrome? 7 AnswersWhen I had a special needs child, I had no clue because there was no test to determine in advance, what he had. What would I have done has become severely cloud... read more
Is aspergers syndrome real? 4 AnswersYes, I believe it's real, it's just people have different levels of it and it's not good to label someone as Asperger's Syndrome, yet sometimes simply call them... read more



