Abstract
GENETIC investigations during the last three decades have supplied evidence that the genes are located linearly in the chromosomes. Cytological studies of the meiotic prophases showed that the chromonemata are differentiated in length, consisting of chromomeres. Cytological studies on the salivary gland chromosomes in many insects and especially in Drosophila disclosed a discoid structure of the chromosomes. “From the differential staining behaviour of these chromatin disks one can conclude that they are or contain chemical compounds of diverse nature”1.
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Kostoff, D., J. Heredity, 21, No. 7 (1930).
Kostoff, D. [NATURE, 141, 690 (1938)].
Muller, H. J., and Gershenson, S. M., Proc. Nat. Acad. Sci., 21, No. 2 (1934).
Prokofieva, Bull. Acad. Sci., U.S.S.R., 394 (1937).
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KOSTOFF, D. The Most Probable Place of Location of the Genes in the Chromonemata. Nature 141, 749 (1938). https://doi.org/10.1038/141749a0
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DOI: https://doi.org/10.1038/141749a0
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