How dose dna store genetic information? wich strocture of dna is responsible for storing info?

DNA stores biological information in sequences of four bases of nucleic acid — adenine (A), thymine (T), cytosine (C) and guanine (G) — which are strung along ribbons of sugar-phosphate molecules in the shape of a double helix. ... Taken as a whole, this package of DNA serves as its owner's complete genetic blueprint. you going to find this in https://www.nlm.nih.gov/visibleproofs/education/dna/dna.pdf
 I Don't know about the second one 

This type of galaxy is an approximately ellipsoidal shape and a smooth, nearly featureless image. they are the largest single star systems, in the universe and are built by the collisions of many smaller galaxies.