Microbial Genetics
The word, used for the small solid supports onto which are spotted hundreds of thousands of tiny drops of DNA that can be used to screen gene expression, is

DNA microarrays
northern blot
southern blot
cloning library

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

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

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