Practice problem
What Are Nucleic Acids? — Structure & Function
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Contributors
(A) By David Anstiss, CC BY SA-2.0, from geograph.com
(B) By Robert Couse-Baker CC BY SA-2.0, via flikr.com
(C) By Petritap CC BY-SA 3.0 or GFDL, from Wikimedia Commons
(D) CC0, from maxpixel.com
Which of the pictures above is most similar to the molecular structure of DNA?