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Since this estimate is based on data from acute radiation exposure experiments, the expected number of genetic deaths is too high by a factor
of 4-8, because it is well documented that doses of radiation delivered
over a long period of time produce less genetic damage than an equal dose
delivered acutely.
For this reason the contribution to spontaneously
occurring genetic deaths expected from mutations which exhibit a small
dominant effect in the first generation progeny induced by background
radiation (not man-made) would be 0.034-0.068 percent.
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