Main Page | See live article | Alphabetical index A karyotype is the complete set of all chromosomes of a cell. The chromosomes are arranged and displayed (often on a photo) in a standard format: in pairs, ordered by size. Karyotypes are examined in searches for chromosomal aberrations, and may be used to determine other macroscopically visible aspects of an individual's genotype, such as sex (XX vs. XY pair). This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.