Although each organism's DNA is unique, all DNA is composed of the same nitrogen-based molecules ... that are arranged such that the nitrogenous bases within one polynucleotide are attached ...

Scientists still needed to figure out this molecule's structure to be sure ... Erwin Chargaff found that the arrangement of nitrogen bases in DNA varied widely, but the amount of certain bases ...

Laying the Groundwork: Levene Investigates the Structure of DNA Meanwhile ... was in turn composed of just one of four nitrogen-containing bases, a sugar molecule, and a phosphate group.

It shows a hexagonal ring with nitrogen atoms at positions 1 and 3 ... This discovery, along with the identification of other nitrogenous bases, laid the foundation for our understanding of DNA and ...

Thus, the base sequence and three-dimensional structure information of DNA molecules are encoded by these nitrogen nuclear spin patterns. Consequently, bases may one day be employed as a storage ...

This diagram depicts the chemical structure of pyrimidine, a six-membered aromatic ring with two nitrogen atoms at positions 1 and 3 (highlighted in blue ... These nucleotides can then be further ...