Biochemistry True about DNA structure: A Purines are adenne and guanine & pyrimidines are uracil and cytosine B Watson and Crick discovered structure in 1973 C Deoxyribose-phosphate backbone with bases stacked inside D Mainly consists of left handed helix 💡 Explanation True about DNA structure: ✓ Correct Answer: C. Deoxyribose-phosphate backbone with bases stacked inside