Discussion
Why Deinococcus radiodurans is able to survive massive exposure to radiation?
Answer: D
Correct answer: Because it has many copies of genes encoding DNA repair
Deinococcus radiodurans survives doses that shatter its chromosome into hundreds of fragments, and reassembles it within hours. Multiple genome copies provide the templates and an unusually efficient repair apparatus does the work - the resistance lies in repair rather than in any shielding.
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