An AT-rich DNA component in the genomes of Chironomus thummi thummi and Chironomus thummi piger |
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| Authors: | E R Schmidt Gerda Vistorin H -G Keyl |
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| Institution: | (1) Lehrstuhl für Genetik, Ruhr-Universität Bochum, Postfach 102148, D-4630 Bochum 1, Federal Republic of Germany |
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| Abstract: | A DNA fraction has been isolated from total Chironomus thummi thummi DNA which is discernible from the bulk Ch. th. thummi DNA by a lower thermal stability. In situ hybridizations with polytene salivary gland chromosomes of Ch. th. thummi and Ch. th. piger made localization of this DNA fraction possible. Hybridizations with bands which contain different amounts of DNA in the two subspecies indicate that the isolated DNA fraction mostly consists of those sequences which represent the genetical difference between thummi and piger.This paper is dedicated to Professor Dr. H. Bauer on the occasion of his 75th birthday |
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