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Relating to or having large chromosomes formed by repeated DNA replication and consisting of many chromatids side by side.

[poly- + Latin taenia, band (from Greek tainiā, ribbon; see ten- in Indo-European roots).]

pol′y·te′nic adj.
pol′y·te′ny n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Genetics) denoting a type of giant-size chromosome consisting of many replicated genes in parallel, found esp in Drosophila larvae
[C20: from poly- + Greek taenia band]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
EPA-Pak Director, Ziaul Islam prescribes Oxo-Biodegradable technology as the viable substitute to the widespread use of polytene bags for carrying light- weight shopping.
Identifications were based on diagnostic species-specific rearrangements of the polytene chromosomes (31,32).
Microdissection and cloning of DNA from a specific region of Drosophila melanogaster polytene chromosomes.
Many morphospecies of black flies are in reality complexes of sibling species differentiable only when polytene chromosomes are analyzed (Shields and Procunier, 1982; Procunier, 1984; Rothfels, 1989; Adler et al., 2004).
Rossant, "Polytene chromosomes in mouse trophoblast giant cells," Development, vol.
Polytene chromosome preparations of the third instar larvae were made by lacto-aceto-orcein method, to identify whether the larvae were D.
Immunological method for mapping genes on Drosophila polytene chromosomes.
He described these structures as large epidermal cells which contained polytene chromosomes that gave a cobble-stoned appearance to the cuticle.
McAllister et al., "Polytene Chromosomal Maps of 11 Drosophila Species: The Order of Genomic Scaffolds Inferred from Genetic and Physical Maps," Genetics 179 (2008): 1601-55; A.
For example, he concluded that polytene chromosomes of insects' salivary glands and other tissues represented a particular form of endopolyploidy and suggested that there were probably different levels of replication of the chromosome thread in different regions of some polytene chromosomes.