Shortly after, Watson and Crick made a crucial advance when they proposed that the DNA molecule was made up of two chains of nucleotides paired in such a way to form a double helix, like a spiral ...

Here is a view of the double helix -- the subject ... Each rung of the DNA ladder consists of two bases. In the DNA molecule, A always pairs up with T, and C always pairs up with G.

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 ...

“The ability to visualize enzymes at a single molecule ... the DNA pinned in place, it is straightforward to trace the motion of fluorescently-labelled proteins under a microscope and view ...

Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell.

DNA is a complex molecule that consists of two strands coiled around each other to form a double helix structure. Comparison of a single-stranded RNA and a double-stranded DNA with their corresponding ...

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 ...