The structure of a nucleotide, consisting of a phosphate group (left), a pentose sugar molecule (middle), and a nitrogenous base (right). (Image: Public Domain) Ribonucleotides are the building blocks ...

They were hardly modest, these two brash young scientists who in 1953 declared to patrons of the Eagle Pub in Cambridge, England, that they had "found the secret of life." But James Watson and ...

Credit: Kateryna Kon/Science Photo Library/ What is DNA, and how does it work? You don't need a degree in ...

DNA is a linear molecule composed of four types of smaller chemical molecules called nucleotide bases ... together to form a double helix. The structure of DNA can also be described as a ladder.

Small molecules are central players as building blocks, effectors and probes of macromolecular structure ... nucleotide analogs that enabled whole-genome sequencing. Early small-molecule ...

Note how its structure resembles a twisted ladder. Note also that DNA with a "left-handed" twist, as this has, is a special kind of DNA known as Z-DNA. The DNA molecule is made up of four bases ...

DNA is a complex molecule that consists of two strands coiled around each other to form a double helix structure. Comparison of a single ... DNA mutations are changes in the nucleotide sequence of the ...