(a)
Only mutations occurring in reproductive cells
affect heredity
(0)
Number of mutations proportional to total amount
of radiation reaching reproductive cells
(3)
About 99% of all gene mutations undesirable
(a)
Chromosome mutations from radiation
(vb)
Genetic effects of radiation statistically
significant only on a total population basis
E.
Summarizing biological effects
They may be direct or indirect
They may be immediate or delayed
They may be structural as well as functional
They may, depending on the amount of ionization, be reversible
or irreversible.
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