Abstract
IN the salivary glands of the larvæ of Drosophila, the chromosomes, which are of immense size, about seventy-five times the length of those in other tissues, show a banded structure. This can be seen in living cells stained with methylene blue and in permanently fixed preparations. The width and spacing of the bands are characteristic and constant for each part of the chromosomes, as was found by Painter1.
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References
Painter, Th. S., “The Morphology of the X-Chromosome in the Salivary Glands of Drosophila melanogaster and a new Type of Chromosome Map for this Element”, Genetics, 10, 448–469; 1934.
Koller, P. Ch., “Spermatogenesis in Drosophila pseudo-obscura Frol. II. The Cytological Basis of Sterility in Hybrid Males of Races A and B”, Proc. Roy. Soc. Edin., 54, 67–81; 1934.
Dobzhansky, Th. “Studies on Hybrid Sterility I. Spermatogenesis in Pure and Hybrid Drosophila pseudo-obscura”, Z. Zellf. u. mik. Anat., 21, 169–323; 1934.
Dobzhansky, Th., and Boch, R. D., “Intersterile Races of Drosophila pseudo-obscura Frol.”, Biol. Centr., 53, 314–320; 1933.
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KOLLER, P. Origin of Variations within Species. Nature 135, 69–70 (1935). https://doi.org/10.1038/135069a0
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DOI: https://doi.org/10.1038/135069a0
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