3h-actinomycin-D Binding to Mitotic Chromosomes of Drosophila Melanogaster

Overview

Journal Chromosoma

Specialty Molecular Biology

Date 1978 May 16

PMID 95939

Citations 6

Authors

S Pimpinelli

G Santini

M Gatti

Affiliations

Soon will be listed here.

Abstract

The binding of 3H-AMD to the metaphase chromosomes of Drosophila melanogaster has been analyzed after two different periods of exposure to photographic emulsion. The entirely heterochromatic Y chromosome was markedly less labelled than euchromatin and other heterochromatic regions. Moreover, the few grains present on the Y chromosome were clustered in two regions, one localized in the middle Ys and the other in the proximal third of YL. This labelling pattern is not affected by removing histones with a 2-hour treatment with 2N HCl. It is suggested that the specific underlabelling of the Y chromosome reflects a peculiar AT richness.

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