A Restriction Endonuclease Cuts DNA at the Sequence ACGT

question 23

Multiple Choice

A restriction endonuclease cuts DNA at the sequence ACGT.If we assume that all four bases are equally represented in DNA,what are the odds of this sequence occurring on a DNA strand?

• A)Roughly every 100 base pairs
• B)Roughly every 250 base pairs
• C)Roughly every 1000 base pairs
• D)Roughly every 10,000 base pairs
• E)Roughly every 20,000 base pairs

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