Trisomy 21 - Down Syndrome Not a Hereditary Disease

[prashantakerkar]

If a mentally retarded couple had a child, would it be mentally retarded?

i.e both parents are mentally retarded, the child born from them i.e offspring will also be born mentally retarded ?

answer is no.

in this case :

social institutions, marriage bureaus keep a database of mentally retarded children and those children suffering from down syndrome
help them in getting married because i feel their offspring will not be
necessarily suffer from down syndrome i.e trisomy 21 as the down syndrome
is not a genetic or heritidary disease.

the joy of becoming parents for both suffering from down syndrome will
be accepted universally.

wouldn't be a noble cause ?

Thanks & Regards,
Prashant S Akerkar

[Darby]

It's an extra chromosome - of course it's both genetic and hereditary.

[JackBean]

of course it's genetic. However, it doesn't have to be hereditary. Question is, what will happen, when the cell will try to split 3 chromosomes 21 into 2 new cells. Usually triploid organisms do not produce gametes, so the question is whether people with Down syndrom are fertile?

[prashantakerkar]

Thank you.

[prashantakerkar]

Thank you.

http://www.allexperts.com/user.cgi?m=6& ... ID=4827349

Thanks & Regards,
Prashant S Akerkar

[Darby]

One extra chromosome is not triploidy.

And half of the gametes would get the extra number 21, a similar set of odds to many other genetic characteristics.

[JackBean]

I know. I meant, that triploid organisms are not fertile and I do not know, whether organism with only one extra chromosome will be fertile, because theoretically the production of gametes should be arrested.