Biochemistry Nucleotides 83ffdd0a Deamination of 'methylated cytosine' will produce: A Thymine B Adenine C Xanthine D Guanine High-Yield Explanation Spontaneous deamination of Cytosine produces Uracil. Thymine is 5-Methyl Uracil. So, deamination of methylated Cytosine will produce Thymine.