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

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

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

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

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