The subunit of DNA made from the sugar, phosphate, and base is called a nucleotide.

Here's a breakdown:

* Sugar: Deoxyribose (a five-carbon sugar)

* Phosphate: A phosphate group (PO₄³⁻)

* Base: One of four nitrogenous bases: adenine (A), guanine (G), cytosine (C), or thymine (T).

These three components are linked together in a specific way:

* The phosphate group of one nucleotide is linked to the sugar of the next nucleotide, forming a sugar-phosphate backbone.

* The bases project inwards and pair with complementary bases on the opposite strand (A with T, and G with C) through hydrogen bonds, forming the double helix structure of DNA.