Regulatory proteins can identify specific sequences on the DNA double helix without unwinding the helix. This is accomplished by inserting
A. RNA promoters into either the major groove or the minor groove of the double helix where the edges of the nitrogen bases protrude.
B. DNA polymerase into the major groove of the double helix where the edges of the nitrogen bases protrude.
C. DNA-binding motifs into the minor groove of the double helix where the edges of the nitrogen bases protrude.
D. RNA polymerase into the major groove of the double helix where the edges of the nitrogen bases protrude.
E. DNA-binding motifs into the major groove of the double helix where the edges of the nitrogen bases protrude.
Answer: E
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