Microbial Genetics
The flow of genetic material in microbial cells usually takes place from

proteins through RNA to DNA
RNA through DNA to proteins
DNA through RNA to proteins
none of these

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Microbial Genetics
Why Deinococcus radiodurans is able to survive massive exposure to radiation?

Because its cellwall contains radioactive elements
Because it produces a thick shell which acts as a shield from the radiation
Because it has unique DNA repair mechanisms
Because it has many copies of genes encoding DNA repair

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