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Environmental influences on puffing in the salivary gland chromosomes of Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

Barrie Burnet  and
Ingeborg Hartmann-Goldstein
Barrie Burnet
Affiliation:
Department of Genetics, University of Sheffield
Ingeborg Hartmann-Goldstein
Affiliation:
Department of Genetics, University of Sheffield
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Summary

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The sequence of development of salivary gland chromosome puffs in Drosophila melanogaster cultured on live yeast and RNA-deficient medium has been studied in late larval and prepupal stages. Differences in puffing pattern between individuals cultured in the two environments are almost entirely due to shifts in the relative timing of puff development at specific chromosome sites. Detailed studies on the right arm of the second chromosome indicate that, at certain sites, puffing activity spreads to adjacent lettered subdivisions of the chromosome. There are differences in the extent of lateral spreading of activity into adjacent regions in the two environments which may be due to clustering of functionally related genes.

Type
Research Article
Information
Genetics Research , Volume 17 , Issue 2 , April 1971 , pp. 113 - 124
Copyright
Copyright © Cambridge University Press 1971

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