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If it is assumed that the bases only occur in the structure in the most plausible tautomeric forms (that is, with the keto rather than the enol configurations) it is found that only specific pairs of bases can bond together.
It has been found experimentally that the ratio of the amounts of adenine to thymine, and the ratio of guanine to cytosine, are always very close to unity for deoxyribose nucleic acid.
—"A Structure for Deoxyribose Nucleic Acid,”
J. D. Watson and F. H.C. Crick
Which verb voice does this passage use?
Why is the verb voice appropriate for this passage?
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If it is assumed that the bases only occur in the structure in the most plausible tautomeric forms (...
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