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The Lederberg replica plating experiment...

The Lederberg replica plating experiment showed that

A

mutations are actually pre-adaptive and evolution is not directed process, in fact evolution is based on chance events in nature and chance mutation in the organism

B

mutations appear in organism in response to change in the enviorment, conscious reaction desire or use and disuse of organs

C

mutations are random and continuous variations that form the raw material for gradual changes of evolution

D

all of these

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The correct Answer is:
A
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