A karyotype test is recommended to monitor the number, shape, and size of chromosomes. Every person has a total 46 chromosomes, i.e. 23 pairs present in each cell. Amongst the 46 chromosomes, every individual inherits 23 chromosomes from their mother and the rest 23 from their father. A karyotype test is helpful to check if there is one or more missing or extra chromosome, or if all the chromosomes are normal in shape and size. Having abnormal numbers, shapes, and sizes of chromosomes are an indication of a specific genetic disorder. The test is also helpful to diagnose genetic defects in unborn babies.