What would happen if 2 people with Down’s Syndrome had a baby?

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o People with Down syndrome have greatly reduced fertility.
Males in particular -- there appears to be one 21-trisomic non-mosaic male fathering a child, in medical literature. One.
Children are very unlikely.
In the event that there is a pregnancy at all, I would expect
o a lot of miscarriages
o some of the children would be born completely normal
o some of the children would be born with 21 trisomy Down syndrome
o a few of the children would be born with 21 tetrasomy Down syndrome

> Would the extra chromosomes cancel each other out?
No. Instead, you get a baby with Down syndrome, and some of the Down syndrome symptoms showing up early. I'll let you look up
21 tetrasomy

> Maybe the offspring would have super powers?
No. Dying younger than most Down syndrome people is not a super power.

They are both sterile. They cannot have any kids.

Hillary Clinton