Respuesta :
The nitrogenous base pairs, which are linked by hydrogen bonds that also hold the strands together, are between this backbone.
There are 3 hydrogen bonds between guanine and cytosine.
There are 3 hydrogen bonds between guanine and cytosine.
Answer:
the attraction of phosphate groups
strong bonds between bases and sugars
carbon to carbon bonds in the sugar
weak hydrogen bonds between the bases
one of these
Explanation: