A DNA sample has a 260/280 ratio of 2. Which of the following treatments can be used to get a better purity of DNA sample?

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#Question id: 3920

#XL - Q Biochemistry

The genes that encode proteins are transcribed by RNA polymerase __.

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#Question id: 3921

#XL - Q Biochemistry

Which observation is not evidence that supports the theory that mitochondria and chloroplasts originate from symbiotic bacteria?

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#Question id: 3922

#XL - Q Biochemistry

The σ70 subunit in E. coli RNA polymerase acts as a/an __.

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#Question id: 3923

#XL - Q Biochemistry

The transcription of __ RNA accounts for most of the transcriptional activity of a cell.

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#Question id: 3924

#XL - Q Biochemistry

Characteristics of ligands involved in transcription include:

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#Question id: 3925

#XL - Q Biochemistry

Constitutive genes