Biology – Structure of nucleic acids and replication of DNA | e-Consult
Structure of nucleic acids and replication of DNA (1 questions)
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The student's statement is incorrect. Not all bases in DNA are purines. While adenine and guanine are purines (with a double-ring structure), cytosine, thymine, and uracil are pyrimidines (with a single-ring structure). Therefore, the statement is false because DNA contains both purine and pyrimidine bases. The presence of both types of bases is crucial for the stability and function of the DNA molecule.