The number of chromosomes in Klinefelter's syndrome is

Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?

Down's syndrome is an example of

The trisomic condition of $Down's$ syndrome arises due to:

An abnormal male child is born to normal parents. This child shows a short neck,stubby hands,slanting eyes,a permanently open mouth with a projecting upper lip,and short stature. This abnormality can be attributed to:

Relative morphologies of chromosomes of an individual indicate his/her