About 1%: Past conception of a chromosomal disorder bumps up your risk of a second to 1% plus any risk/age factor.
Answered 9/9/2013
4.9k views
Depends.: If the ds is sporadic, the chance is under 1 percent. If genetic (translocation involving chromosome 21) then the chances are higher.
Answered 8/26/2013
4.9k views
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A doctor has provided 1 answer
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