Inheritance of spontanous motional activity decreas in unicellular hydrobiontes Spirostomum ambiguum γ-irradiation at low doses

Stable lowering of spontaneous motion activity is observed in a very low for this object dose 0.01 Gy in a population of paramecium Spirostomum ambiguum. This injure inherits in vegetative reproduction in a lot of cellular generations (12-15 generations were observed). It takes place in a number of individuals. Doses-independence distinguishes this injure from usual radioactive cellular effects. Significance of these results is taken up in connection with the problem of low doses of radioactive danger.