Consideration of tautomerism in guanine suggests that it can exist in lactam and lactim forms.The form that is typically found in DNA is ___,typically pairs with ___,while the other form is likely to pair with ___,leading to the possible spontaneous mutations.

Question

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Guanine typically exists in the lactam form in DNA and pairs with cytosine, while the lactim form is more likely to pair with thymine, leading to possible spontaneous mutations. Uracil is not typically found in DNA pairing, making choices D and E incorrect. Adenine does not typically pair with lactim guanine, making choice B less accurate.

Consideration of Tautomerism in Guanine Suggests That It Can Exist