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A vertical stripe on a polytene chromosome that results from the specific association of a large number of chromomeres. The most commonly examined polytene chromosomes are in the salivary gland nuclei of insects, and recent studies of Drosophila suggest that each band contains the genetic material of a single gene. However, the significance of the bands in human and other chromosomes is not known.

Subjects: Genetics and Genomics — Zoology and Animal Sciences.

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