Genomic variation of laboratory strains and natural populations of Drosophila melanogaster under X-irradiation.

摘要

Spontaneous and X-ray-induced mutation rates and spectrums were estimated in laboratory strains and natural populations of Drosophila melanogaster from the Chernobyl meltdown area. In all natural populations, the spontaneous mutation rate was an order of magnitude higher (10-3) than in laboratory strains. Irradiation at a total dose of 3000 R was shown to induce genetic instability in a stable laboratory strain and to increase the mutation rate and spectrum range in an unstable natural population.