Summary
Combined cytophotometric and autoradiographic experiments are performed on individual polytene salivary gland nuclei of X/X-female and X/Y-male larvae ofDrosophila melanogaster, DNA measurements of unlabeled nuclei reveal complete douplings of all 4C DNA quantity during polytenization. These new data do not agree with the hypothesis of heterochromatic underreplication.
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Dennhöfer, L. Complete replication of DNA in polytene nuclei of salivary glands ofDrosophila melanogaster . Wilhelm Roux' Archiv 190, 237–240 (1981). https://doi.org/10.1007/BF00848310
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DOI: https://doi.org/10.1007/BF00848310