Synergistic interaction between particular X-chromosome deletions andSex-lethal causes female lethality inDrosophila melanogaster

Anand, Anuranjan and Chandra, Sharat H (1994) Synergistic interaction between particular X-chromosome deletions andSex-lethal causes female lethality inDrosophila melanogaster. In: Journal of Genetics, 73 (2-3). pp. 81-90.

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Abstract

We studied the effect on female viability of trans-heterozygous combinations of X-chromosome deficiencies and Sxt-(fl), a null allele of Sex-lethal. Twentyfive deficiencies, which together covered 80% of the X chromosome, were tested. Seven of these trans-heterozygous combinations caused significant levels of female lethality. Two of the seven interacting deficiencies include the previously known sex determination genes sans fille and sisterless-a. Four of the remaining uncover X-chromosomal regions that were not hitherto known to contain sex determination genes. These newly identified regions are defined by deficiencies Df(1)RA2 (7D10; 8A4-5), Df(1)KA14 (7F1-2; 8C6), Df(1)C52 (8E; 9C-D) and Df(1)N19 (17A1; 18A2). These four deficiencies were characterized further to determine whether it was the maternal or zygotic dosage that was primarily responsible for the observed lethality of female embryos, daughterless and extra macrochaetae, two known regulators of Sxl, influence the interaction of these deficiencies with Sxl.

Item Type:	Journal Article
Publication:	Journal of Genetics
Publisher:	Indian academy of sciences
Additional Information:	Copyright of this article belongs to Indian academy of sciences.
Keywords:	Drosophila melanogaster;sex determination;Sex-lethal.
Department/Centre:	Division of Biological Sciences > Microbiology & Cell Biology
Date Deposited:	13 Apr 2011 06:52
Last Modified:	13 Apr 2011 06:52
URI:	http://eprints.iisc.ac.in/id/eprint/36849

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