Index >> Human Genetics >> Abnormal Human Karyotypes

Abnormal Human Karyotypes
The normal chromosome number of man is 46, but various types of chromosomal abnormalities either in their number or morphology have been observed. These chromosomal abnormalities are expressed in a defective phenotype, i.e., various defects occur in the morphology and physiology of an organism all of which cause different symptoms of a particular disease and called a syndrome. The chromosomal abnormalities can be studied under following headings: