After Exposing a DNA Extract to Phenol or a Mixture

question 16

Multiple Choice

After exposing a DNA extract to phenol or a mixture of phenol and chloroform and centrifuging the solution,where are the proteins located?

• A)in the upper aqueous phase
• B)in the lower phenol phase
• C)in the upper phenol phase
• D)in the lower aqueous phase
• E)precipitated at the boundary between the aqueous and phenol phases

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