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Chromosomal basis of dosage compensation in Drosophila: II. The DNA replication patterns of the male X-chromosome in an autosome—X insertion in D. melanogaster*

Published online by Cambridge University Press:  14 April 2009

S. C. Lakhotia
S. C. Lakhotia
Affiliation:
Cytogenetics Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 19, India
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The functional morphology and the replication pattern of the male X-chromosome in an autosome-X insertion stock (T(1;3) 05) of Drosophila melanogaster have been examined. In larval salivary glands carrying this insertion neither the enlargement and pale staining of the single male X, nor the characteristic early completion of replication cycle, as revealed by 3H-TdR autoradiography is in any way changed. The normal properties of the inserted autosomal segment are also unaltered. The results appear to support a ‘piecemeal’ type of dosage compensation mechanism in Drosophila operating through the male.

Type
Research Article
Information
Genetics Research , Volume 15 , Issue 3 , June 1970 , pp. 301 - 307
Copyright
Copyright © Cambridge University Press 1970

References

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