defined:

The visual appearance of a chromosome when stained and examined under a microscope. Particularly important are visually distinct regions, called light and dark bands, which give each of the chromosomes a unique appearance. This feature allows a person's chromosomes to be studied in a clinical test known as a karyotype, which allows scientists to look for chromosomal alterations.

explained:

Listen to a detailed explanation.

Dr. Eric Green, of the National Human Genome Research Institute's Genome Technology Branch, defines cytogenetic map.

illustrated:

View illustration

related
terms:

chromosome, deletion

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