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Analysis of spontaneous and ethylmethanesulfonate-induced visible mutations in the genetically unstable MS, w strain of Drosophila melanogaster

Romanova, N.I.; Aslanian, M.M.; Kim, A.I.

Genetika 32(6): 759-766

1996

ISSN/ISBN: 0016-6758
PMID: 8964464
Document Number: 468653
We analyzed genetic effects of ethylmethanesulfonate (EMS) on mature sperm of males of the Drosophila melanogaster MS, w strain. The frequency of induced mutations was estimated in the X chromosome, in five loci of chromosome 2 (b, j, pr, cn, and vg), and in eight loci of chromosome 3 (ru, h, th, st, cu, sr, es, and ca). Mutability was significantly increased in the genetically unstable MS, w strain in comparison with the reference laboratory ss, w strain. In MS, w, genetic instability was characteristic of more than 50% EMS-induced mutations. Analysis of the mutation spectrum revealed a specific distribution along the chromosomes. In MS, w, exhibition of spontaneous and induced instability was shown to be similar. This could imply a common mechanism of control of mutability involving transpositions of mobile genetic elements.

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