To make a bacterial cell 'competent' to take up DNA, it is t... — Zoology | Mockzy | Mockzy

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To make a bacterial cell 'competent' to take up DNA, it is treated with a specific concentration of a divalent cation like:

A

Sodium

B

Calcium

C

Potassium

D

Iron

Retroviruses are used as vectors in animals because:

The method of 'Heat Shock' in transformation involves placing cells on ice, then

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