double helix structure of dna floating in blue liquid

dna doublehelix deoxyribonucleicacid genetic genetics biology biochemistry science research molecule structure spiral twisted ladder nucleotide basepair adenine thymine guanine cytosine purine pyrimidine nucleoside phosphate sugar backbone hydrogenbond hydrophobic hydrophilic majorgroove minorgroove antiparallel complementary replication transcription translation proteinsynthesis geneexpression geneticcode genome chromosomes inheritance variation evolution biotechnology geneticengineering medicine health