2. The structural characteristics of the chromosome set.
3. Those individuals having an identical complement of chromosomes.
4. A photomicrograph of the chromosomes of a single cell, taken during metaphase, when each chromosome is still a pair of chromatids.
The chromosomes are then arranged in numerical order, in descending order of size.
It is useful in evaluating congenital anomalies, mental retardation, and delayed puberty as well as in the prenatal diagnosis of serious congenital diseases; such as, Klinefelter syndrome and Down syndrome and other suspected genetic disorders.