Abstract
Metaphase chromosomes of D. nasutoides were hybridized situ with 3H-cRNA synthesized from the four satellites which make up 50–60% of the total DNA of this species. All four satellites were localized in the large, metacentric, heterochromatic chromosome four. They did not, however, appear to hybridize to centromeric or other constitutive heterochromatin, nor did they, with the exception of satellite I, seem to hybridize in the specific regions of chromosome four which, on the basis of C, Q, and H banding and AT contents, were predicted to contain some of these satellites. —Comparison of grain patterns with the results of fluorescent staining indicated that satellite-bearing heterochromatin was not always associated with other fractions of constitutive heterochromatin in interphase nuclei and was, at least partially, decondensed in some larger nuclei.
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Wheeler, L.L., Arrighi, F., Cordeiro-Stone, M. et al. Localization of Drosophila nasutoides satellite DNAs in metaphase chromosomes. Chromosoma 70, 41–50 (1978). https://doi.org/10.1007/BF00292214
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DOI: https://doi.org/10.1007/BF00292214