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Sequence of puff formation inRhynchosciara polytene chromosomes

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Abstract

The chief characteristics of the life cycle ofRhynchosciara sp. are: egg stage (12 days); three larval instars of approximately 6 days each, followed by a 4th instar of approximately 40 days duration; pupation (6 days); and adult form (5–6 days). Maps of the 4 polytene chromosomes ofRhynchosciara sp. have been prepared, and the temporal sequence of puff formation on the chromosomes described. The cocoon is synthesized during the prepupal period, and at this time major puffs are seen on all chromosomes. The largest and most numerous puffs occur on the salivary gland chromosomes during the 24 hours prior to the last or prepupal molt. Three of the puffs that occur at this time are DNA-puffs (Summary see p. 249).

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References

  • Beermann, W.: Chromosomal differentiation in insects, Developmental cytology (ed.D. Rudnick) p. 83–103. New York: Ronald Press 1959.

    Google Scholar 

  • Breuer, M. E., andC. Pavan: Behavior of polytene chromosomes ofRhynchosciara angelae at different stages of larval development. Chromosoma (Berl.)7, 371–386 (1955).

    Article  Google Scholar 

  • Lara, F. J. S., H. Tamaki, andC. Pavan: Laboratory culture ofRhynchosciara angelae. Amer. Naturalist99, 189–191 (1965).

    Article  Google Scholar 

  • Nonato, E. F., andC. Pavan: A new species ofRhynchosciara,Rübsamen 1894 (Diptera Mycetophilidae sp.). Rev. bras. Biol.11, 435–437 (1951).

    Google Scholar 

  • Pavan, C.: Nucleic acid metabolism in polytene chromosomes and the problem of differentiation. Brookhaven Symp. Biol.18, 222–241 (1965).

    Google Scholar 

  • —, andM. E. Breuer: Polytene chromosomes in different tissues ofRhynchosciara. J. Hered.43, 150–157 (1952).

    Google Scholar 

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Author notes

  1. Ellen Mattingly

    Present address: Biology Division, Oak Ridge National Laboratory, P. O. Box Y, 37830, Oak Ridge, Tennessee

Authors and Affiliations

  1. Biology Division, Oak Ridge National Laboratory, P. O. Box Y, 37830, Oak Ridge, Tennessee

    Curtis Parker

Authors
  1. Ellen Mattingly
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  2. Curtis Parker
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Research sponsored by the U.S. Atomic Energy Commission under contract with the Union Carbide Corporation.

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Mattingly, E., Parker, C. Sequence of puff formation inRhynchosciara polytene chromosomes. Chromosoma 23, 255–270 (1968). https://doi.org/10.1007/BF02450999

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  • DOI: https://doi.org/10.1007/BF02450999

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