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Definition of Polytene
1. having chromosomes of a certain type [adj]
Medical Definition of Polytene
1. 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 of the details are greatly enlarged. (09 Oct 1997)
Lexicographical Neighbors of Polytene
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