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tyronWAshahbasingw tyronWAshahbasingw
  • 05-02-2017
  • Biology
Answered

What makes up the sides of the “ladder” of a dna molecule?

Verified Answer :

Anonymous Anonymous
  • 05-02-2017

Adenine, guanine, thymine and cytosine are the four nitrogenous bases that are attached to a sugar molecule on each side of the ladder. When a phosphate, a sugar and a base form an attachment, they create a sub-unit of DNA called a nucleotide. Each nitrogenous base is held together by a hydrogen bond.

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