<prompt> Effect of radiation above threshold level -Stochastic effectNon-Stochastic effectLethal effectGenetic effect  <response>: parks textbook of preventive and social medicine 23rd edition effect of radiation exposure are called somatic if they become manifest in the exposed individual and hereditary if they the descandants . for some somatic effects ,the propability of an occurring ,rather than its severity ,is regarded as a function of dose without a theshold stochatic effect.where as for other somatic effects the severity vary with doses non-stochastic effect :a threshold may therefore exist for such effects . 