Karyotype

• the standardized classification and arrangement of photographed chromosomes.
  Source: Anthromorphemics
• the size, shape, and general appearance of the chromosomes in mitotic metaphase
  Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
• All of the chromosomes in a cell or an individual organism, visible through a microscope during cell division.
• A karyotype is an individual's collection of chromosomes. The term also refers to a laboratory technique that produces an image of an individual's chromosomes. The karyotype is used to look for abnormal numbers or structures of chromosomes.