Which of these is widely used in genetic engineering?

  • A
    Anopheles
  • B
    Dragon fly
  • C
    Dragon lizard
  • D
    Fruit fly

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$R$ - With the help of $PCR$,thousands of $DNA$ copies are formed.

Biotechnology is the modern branch of biology which deals with

What is the primary requirement for antibiotic production in biotechnology?

$A$: Selection of recombinants due to inactivation of antibiotics is a cumbersome procedure.
$R$: It requires simultaneous plating on two plates having different antibiotics.

Identify '$Q$' and '$R$' in the given figure of a stirred-tank bioreactor.

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