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For Guanine:
In guanine, the nitrogen atoms whose lone-pair electrons are included in the aromatic pi system is as follows:
Those Nitrogen atoms are circled:

For Cytosine:
In guanine, the nitrogen atoms whose lone-pair electrons are included in the aromatic pi system is as follows:
Those Nitrogen atoms are circled:

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11/10/198 4% weloz For the DNA bases guanine and cytosine, select the nitrogen atom(s) whose lone-pair...