[Properties of super unstable mutations in the Drosophila melanogaster yellow locus]

The properties of super-unstable systems of the white, singed and ocetilless loci obtained as a result of P-M dysgenesis induction in the strains with a mobilized Stalker were described earlier. In the studies of super-instability in ocetilless locus, six super-unstable mutations in the yellow locus were obtained. Detailed genetic analysis was performed resulting in isolation of 80 alleles with different phenotype expression. In general, super-instability in the yellow locus reminds that in the white and ocetilless loci. Most of alleles are highly unstable possessing a characteristic pattern of mutation changes. Also, sub-systems were found in the yellow super-unstable system. Each consists of several mutually inter-converting alleles which possess a characteristic phenotype, mode and rate of mutation changes.