Ov. Okladnova, THE ROLE OF THE HOMOLOGOUS TRANSLOCATION PLACED IN THE Y-CHROMOSOME ON DROSOPHILA MALES MUTAGENESIS OF THE DOUBLE SUPER-UNSTABLE SYSTEM, Genetika, 29(7), 1993, pp. 1226-1231
Main features of mutagenesis induced in the double super-unstable syst
em in Drosophila melanogaster males and females was studed earlier. Ve
ry different y- and sc-alleles arised under the mutagenesis. These are
differed one from another by the expression of yellow and scute loci.
However, it was shown that the female's mutagenesis very differed fro
m the male's one. The structure of a homologous chromosome has played
an important role in the mutagenesis in Drosophila females. We found h
ere that the homologous translocation in Y chromosome led to double de
crease of the frequency of the mutagenesis in males. It is proposed th
at interconnections between two homologous insersions are essential in
the recombinational processes by which alleles change. The nature and
mechanism of the sub-lethal allele's formation in the presense of tra
nslocation in Y chromosome is discussed.