She had found that DNA can exist in two forms, depending on the relative humidity in the surrounding air. This had helped her deduce that the phosphate part of the molecule was on the outside.

These bases are the rungs of the DNA ladder. (It takes two bases to form a rung -- one for each side of the ladder.) A sugar molecule, a base, and a phosphate molecule group together to make up a ...

It carries the genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses. DNA is a complex molecule that consists of two strands coiled ...

the helix structure is unwound special molecules break the weak hydrogen bonds between bases, which are holding the two strands together this process occurs at several locations on a DNA molecule ...

DNA sequencing is a laboratory method used to determine the sequence of a DNA molecule. The method was developed by Frederick Sanger in 1975, who was later awarded the Nobel Prize in chemistry in ...

This unprecedented view "allows you to ... Credit: James Graham/UC Davis When a DNA molecule replicates an enzyme called "helicase" unzips the double helix into two single strands.

Francis Crick and James Watson with a model of the DNA molecule At midday on 28 February ... in the nearby Cavendish laboratory, the two scientists had discovered the structure of deoxyribonucleic ...

Roche has put forward a new approach to genetic analysis, which it describes as sequencing-by-expansion—a proprietary method that pulls apart the DNA molecule ... fruit of two of Roche’s ...