Trisomic condition of Down's syndrome arises due to
Triploidy
Translocation
Non-disjunction
Dicentric bridge formation
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 ?
The condition in which there are more than two complete set of chromosome is called
Euploidy is best explained by
Monosomy and trisomy can be represented as
$A$ : Turner's syndrome generally does not occur in males.
$R$ : Foetus with $44 + YO$ complement generally dies.