polytene

A giant chromosome which is composed of thousands of copies of DNA parallel to one another instead of the usual one copy of DNA per chromosome. They are found in the salivary glands of insects, in certain protozoans, and in flowering plants. As found in the larvae of the fruit fly Drosophila melanogaster, they are useful to geneticists because all
Found on http://www.mondofacto.com/facts/dictionary?polytene

polytene

Type: Term Pronunciation: pol′i-tēn Definitions: 1. Consisting of many filaments of chromatin as the result of repeated division of chromonemata without separation of filaments.
Found on http://www.medilexicon.com/medicaldictionary.php?t=71119
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