The genotype of an individual with Down's syndrome is:

If the haploid chromosome number in a cell is $12$,then the monosomic number will be:

Mongolism syndrome is caused by

- Physical, psychomotor and mental development is retarded.
- Palm is broad with characteristic palm crease, these symptoms show....

If a female individual has a small round head,furrowed tongue,partially open mouth,and a broad palm with a characteristic palm crease,and also exhibits retarded physical,psychomotor,and mental development,the karyotype analysis of such an individual will show:

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