what is the backbone of dna molecule made of
User: The backbone, or sides, of the DNA molecule are made of A. cytosine. B. nitrogenous bases. C. hydrogen bonding. D. sugar and phosphate. Weegy: D. sugar and phosphate. batotoy|Points 1475|User: An organism's genetic code is determined by A. the sugar-phosphate bonds in its DNA. B. the type of protein present in its cells. C. the length of the DNA strands in its cells.