Number of chromosomes in Down's syndrome are
$46$
$47$
$48$
$49$
In which disorder $XXY$ karyotype is present ?
What is Down’s syndrome ? Give its symptoms and cause. Why is it that the chances of having a child with Down’s syndrome increases if the age of the mother exceeds forty years ?
A pregnant woman who has done aminocentesis test finds an extra Barr body in her embryo. The syndrome which is likely to be associated with the embryois
Assertion: Aneuploidy may be of hypoploidy or hyperploidy type.
Reason: Monosomy lacks one pair of chromosomes.