In cloning vectors,antibiotic resistant genes are helpful for

  • A
    transfer of foreign gene to the host
  • B
    selection of recombinants
  • C
    making the host cells competent
  • D
    cleaving of vector by $REN$

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Western blotting technique was developed by:

Which enzyme is not used for $DNA$ isolation in animal cells?

Restriction endonucleases are

In gel electrophoresis, the separated $DNA$ fragments can be visualized only after staining the $DNA$ with a compound known as ............. followed by exposure to $UV$ radiation.

Hind $II$ cuts the $\text{DNA}$ molecule at a particular point by recognizing a specific sequence of how many base pairs?

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