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01-Jul-2017 17:07

It is New Latin from Ancient Greek κάρυον karyon, "kernel", "seed", or "nucleus", and τύπος typos, "general form").

Karyotypes describe the chromosome count of an organism and what these chromosomes look like under a light microscope.Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics.The study of whole sets of chromosomes is sometimes known as karyology.The fundamental number, FN, of a karyotype is the number of visible major chromosomal arms per set of chromosomes.

Aneuploidy is the condition in which the chromosome number in the cells is not the typical number for the species.

Normal karyotypes for females contain two X chromosomes and are denoted 46, XX; males have both an X and a Y chromosome denoted 46, XY.