leeajun7ezRQual leeajun7ezRQual
  • 15-11-2016
  • Biology
contestada

The "backbone", or sides, of the dna molecule are made of
a. cytosine.
b. nitrogenous bases.
c. hydrogen bonding.
d. sugar and phosphate.

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topdog26
topdog26 topdog26
  • 15-11-2016
im pretty sure its b
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