Question

Read the following statements and select the correct option.
(I) E.coli cloning vector pBR322 have several restriction sites , ori , antibiotic resistance genes and rop.
(II) Competent bacterial cells cannot take up foreign DNA.
(III) In elution ,the separated bands of DNA are cut out fron agarose gel and extracted from the gel piece.
(IV) The downstream processing and quality control testing vary from product to product .

Answer 1

Answer:

Except (II) , all are correct

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