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Control of polytenic replication in dipteran larvae. II. Effect of growth temperature

โœ Scribed by Toby C. Rodman

Book ID
102308339
Publisher
John Wiley and Sons
Year
1967
Tongue
English
Weight
305 KB
Volume
70
Category
Article
ISSN
0021-9541

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โœฆ Synopsis

A comparison has been made, by Feulgen photometry, of the polytene nuclei of the salivary glands of a wild-type strain of Drosophila melanogaster grown at 17ยฐC and 25"C, respectively. Despite the fact that the time period of the l a n d stage was more than doubled at the lower temperature, the DNA values were the same in magnitude and similar in distribution of replication classes at each of the stages studied. The data have been interpreted as indicating that, so long as the larval state prevails, initiation of polytenic replication occurs upon completion of the previous cycle.

Methods

Canton -S has been maintained in these laboratories for over four years by mass

๐Ÿ“œ SIMILAR VOLUMES

Control of polytenic replication in dipt
Control of polytenic replication in dipteran larvae. I. Increased number of cycles in a mutant strain of Drosophila melanogaster
โœ Toby C. Rodman ๐Ÿ“‚ Article ๐Ÿ“… 1967 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 640 KB

Previous studies have demonstrated that a consistent maximum number of polytenic replication cycles occurs in the salivary gland nuclei of a wild-type strain of D. melanogaster. Since that number is achieved within the larval period, the DNA synthesis of the prepupal period is believed to be that of