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A Map of the Fourth Chromosome of Drosophila melanogaster, Based on Crossing over in Triploid Females

Sturtevant, A. H. (1951) A Map of the Fourth Chromosome of Drosophila melanogaster, Based on Crossing over in Triploid Females. Proceedings of the National Academy of Sciences of the United States of America, 37 (7). pp. 405-407. ISSN 0027-8424. http://resolver.caltech.edu/CaltechAUTHORS:STUpnas51

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Abstract

Under ordinary conditions there is so little crossing over in the fourth chromosome of Drosophila melanogaster that the usual method of constructing a map is not practicable. Deduction from the behavior of translocations has been utilized, but as will be shown here, has led to an incorrect result. Bridges and Brehme (1944) give the seriation bt (bent), sv (shaven), ci (cubitus interruptus), gvl (grooveless), ey (eyeless), with 0.2 per cent crossing over for the whole series. This crossover value is certainly too high; it may be doubted if as many as five crossovers have ever been detected from diploid females. The results presented below show also that the above sequence is altogether incorrect, the true order being ci, gvl, bt, ey, sv, (with a possibility that the positions of ci and gvl should be reversed).


Item Type:Article
Additional Information:Copyright © 1951 by the National Academy of Sciences Communicated May 8, 1951
Record Number:CaltechAUTHORS:STUpnas51
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:STUpnas51
Alternative URL:http://www.pnas.org/content/vol37/issue7/
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6430
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:08 Dec 2006
Last Modified:14 Nov 2014 19:19

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