Question

What makes up the backbone of DNA​

Answer 1

It has a alternating chemical phosphate and sugar back from making the sides of the ladder. (Deoxyribose The name of the sugar found in backbone of DNA.)

Answer 2

It has an alternating chemical phosphate and sugar backbone, making the 'sides' of the ladder. (Deoxyribose is the name of the sugar found in the backbone of DNA.) In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).

Step-by-step explanation: