I want to know the answer to the following question:
What is the backbone of a DNA double helix made of?
All the background I'm provided with is that "Two chains of DNA twist around each other to form a DNA double helix with the phosphate-sugar backbone spiralling around the outside, and the bases pointing inwards with adenine base pairing to thymine and guanine to cytosine.". Is that enough to answer the question?
Answer: yes