According to this rule, the amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine in a double-stranded DNA molecule. This 1:1 ratio of A:T ...
Chemical structure of guanine, showing its double-ring purine structure and the functional groups involved in hydrogen bonding with cytosine. (Image: Public Domain) Guanine has the chemical formula ...
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