Question

the structure of dna is called the double helix. the word \double\ is used because it has two sides = two sugar phosphate backbones it was discovered by two researchers--watson & crick it is made up of two sugars = ribose & deoxyribose it has two pairs of matching bases = a with t & c with g rewatch

Explanation:

The term "double" in double helix refers to the structural feature of DNA having two sugar-phosphate backbones that twist around each other. The discovery by Watson and Crick relates to the structure's identification, not the "double" label. DNA uses only deoxyribose sugar (not ribose), and base pairing is a feature of the rungs, not the "double" backbone.

Answer:

it has TWO sides = two sugar phosphate backbones