1 doctor weighed in:

Can someone carry the gene for Down syndrome but not have downs?

1 doctor weighed in
Dr. James Ferguson
Pediatrics

In brief: Not the usual form

The material that causes ds is not carried on genes like eye color or blood type.
The features that define ds are present when an extra piece of the 21 chromosome ends up in a baby.That can happen if a whole extra 21 (95%) is present or just the extra piece. Rare.

In brief: Not the usual form

The material that causes ds is not carried on genes like eye color or blood type.
The features that define ds are present when an extra piece of the 21 chromosome ends up in a baby.That can happen if a whole extra 21 (95%) is present or just the extra piece. Rare.
Thank
Get help from a real doctor now
Dr. Shontae Buffington
Board Certified, Pediatrics
15 years in practice
884K people helped
Continue
111,000 doctors available