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PMID: 6155244 Published · ppublish English Comparative Study Journal Article Research Support, U.S. Gov't, P.H.S.

Dosage compensation of X-linked heat-shock puffs in Drosophila pseudoobscura.

Chromosoma ·Vol. 76 ·No. 3 ·1980-00-00 ·Pages 245-54

Pierce DA, Lucchesi JC

Abstract

Four major puffs are inducible by heat shock in the larval salivary gland chromosomes of D. pseudoobscura. Two of these puffs are present at 23 and 39-40 on the right arm of the X chromosome and two are present at 53 and 58 on chromosome 2. By means of in situ hybridization, residual homologies were demonstrated between the puffs at 23 in D. pseudoobscura and at 63 C in D. melanogaster, and between the two chromosome 2 puffs of D. pseudoobscura and 87A and 87C of D. melanogaster. RNA synthesis was monitored as a function of 3H-uridine incorporation in the major heat-induced puffs of D. pseudoobscura and was found to be equivalent in males and females indicating dosage compensation of the two X-linked loci. The evoluation of the regulatory controls of these genes is discussed.

MeSH Terms

Animals Biological Evolution DNA/genetics Drosophila/genetics Drosophila melanogaster/genetics Female Hot Temperature Male Nucleic Acid Hybridization RNA/biosynthesis Sex Chromosomes/ultrastructure Sex Factors X Chromosome/ultrastructure

Chemicals

RNA DNA

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Pierce D A

Lucchesi J C

References (27)

27 references, click to expand

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Article Info

Journal

Chromosoma

Abbr.

Chromosoma

ISSN

0009-5915

DOI

10.1007/BF00327265

Published

1980-00-00

Pages

245-54

Language

English

Region

Austria

NLM ID

2985138R

Subset

External Links

PubMed source DOI: 10.1007/BF00327265 View journal details

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Dosage compensation of X-linked heat-shock puffs in Drosophila pseudoobscura.

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