Respuesta :

Kberriosreyes

Answer:

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).

Explanation:

Deoxyribonucleic acid is the molecule that holds the details for cell maturation, functioning, reproduction and development. DNA is the courier for passing hereditary qualities from generation to generation.

The correct answer is:

Option A. Sugar and phosphates.

This can be explained as:

  • The phosphate and the sugar construct the backbone while the underpart of the molecule comprises a nitrogen base.

  • The structure is linked together by the phosphodiester bond established between the sugar and the phosphate.

  • While the nitrogen bases like A, T, G, C are linked by hydrogen bonding.

Therefore the backbone of DNA consists of sugar and phosphate.

To learn more about the backbone of DNA follow the link:

https://brainly.com/question/6954439

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