The number of chromosomes in Down's syndrome is

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:

The monosomic condition in human beings depicted as $XO$ is referred to as

Which disorder is caused by autosomal primary non-disjunction?

In $Drosophila \text{ } melanogaster$, $3$ pairs of autosomes and sex chromosomes of $XO$ type give rise to a normal male in appearance. In humans, $22$ pairs of autosomes and $XO$ type of sex chromosomes result in:

Identify the disorder in the child having the following symptoms as shown in the image.