Sometimes chromosome number increases or decreases due to:

In Klinefelter's syndrome,what is generally the set of sex chromosomes?

The diagrammatic representation of the chromosomes of an individual is called

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:

Mental retardation in humans,associated with sex chromosomal abnormality,is usually due to:

In which of the genetic disorders does an individual have an overall masculine development,gynaecomastia,and is sterile?