Abstract
A study of the puffing patterns of the salivary gland chromosomes of D. pseudoobscura was carried out through several larval, prepupal, and pupal stages of development. A total of 176 puffs were found, 111 of which changed during the stages studied. As described in previous investigations with other Drosophila species there are two major peaks of puffing activity. These two peaks occur during puparium formation and pupation. Additionally, a minor activity-peak occurs during mid-prepupal life. Attempts have been made to establish correlations between the puffing data and those obtained from electrophoretic and ultrastructural studies.
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Supported in part by grants GM-16736-03 and FR-05426-09 from the U.S. Department of Health, Education, and Welfare. Ann Jacob Stocker was a holder of a University of Texas predoctoral fellowship.
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Stocker, A.J., Kastritsis, C.D. Developmental studies in Drosophila . Chromosoma 37, 139–176 (1972). https://doi.org/10.1007/BF00284936
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DOI: https://doi.org/10.1007/BF00284936