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Genetic effects
are those that can be passed from parent to child. Health physicists
estimate that about fifty severe hereditary effects will occur in a group of
one million live-born children whose parents were both exposed to one rem.
About one hundred twenty severe hereditary effects would occur in all
descendants.
In comparison, all other causes of genetic effects result in as many as
100,000 severe hereditary effects in one million live-born children. These
genetic effects include those that occur spontaneously ("just happen") as
well as those that have non-radioactive causes.
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