Abstract
RECENT studies of the chromosomes in various somatic tissues of Drosophila and other insects is throwing further light on the processes of heredity. It has been known since 1881, when Balbiani studied the chromosomes in the salivary gland cells of the Chironomus larva, that they are relatively very large and are marked with transverse bands or discs. Last year, Prof. T. S. Painter expressed the view that these bands, which show equally in the giant chromosomes of the salivary glands of Drosophila larvae, correspond with the locations of the genes. An exciting line of investigation is now being pursued, in which the positions of the discs or bands are compared in different genotypes of Drosophila having deficiencies, trans-locations and other alterations in their chromosomes.
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GATES, R. Finer Structure of Chromosomes. Nature 134, 839–840 (1934). https://doi.org/10.1038/134839a0
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DOI: https://doi.org/10.1038/134839a0