carlarobles6719 carlarobles6719

27-03-2024
Biology

contestada

The two strands of a double helix of DNA are held to each other across the helix
a. by hydrogen bonds between a purine and a pyrimidine.
b. by phosphodiester bonds between a sugar and phosphate.
c. by covalent bonds made by dehydration reactions.
d. by hydrogen bonds between A and G, or between C and T.

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