MARTIN SHIELDS / SCIENCE PHOTO LIBRARY MARTIN SHIELDS / SCIENCE PHOTO LIBRARY
Model of the DNA double helix. The model shows the two strands of nucleotide monomers consisting of deoxyribose sugar (the pentagons), phosphate groups and nitrogen bases. The faint, dotted connections between the two strands represent the weak hydrogen bonds between paired N bases.
Model release not required. Property release not required.