Describing the structure of DNA

DNA is made up of deoxyribose sugar, phosphates , base . they are 4 types of bases ATCG nucleotided are joined by condensation to form a polynucleotide and phosphodiester bonds form. DNA is made up of 2 polynucleotides strands together , the strands are join together by hydrogen bonds between complementary base pairs , pairs with the base pairs. Dna is called a double helix.