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

15-11-2016

im pretty sure its b

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