Biology textbooks teach these fundamental rules of life with a simple diagram showing DNA looking like an abstract spiral staircase. But reality is far messier. Each DNA molecule is six feet long.

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 staircase.

DNA has a spiral-staircase structure, in which each step consists of pairs of molecules called nucleobases. Two of these four nucleobases – adenine and guanine, which belong to a group of ...

The new finding unifies two competing ideas about the process: whether it involves winding chromosomes into a spiral staircase or into ... those strings of DNA must condense into easy-to-transfer ...

Back at DeepMind’s spiral staircase, an employee explains that the DNA sculpture is designed to rotate, but today the motor is broken. Closer inspection shows some of the rungs of the helix are ...

A DNA molecule comprises two molecular strands that twist around one another, creating a structure similar to a spiral staircase. Each strand has a series of chemical bases along its length ...

The nucleotides are lined up millions of times and form the DNA double helix, similar to a spiral staircase. Scientists from the UoC's Department of Chemistry have now shown that the structure of ...

Dezeen promotion: the 10-tonne copper spiral staircase rising through ... Shaped like the double helix strands of DNA, the spiralling staircase in the main atrium is clad in panels of polished ...

Often described as the blueprint for every cell, DNA, or deoxyribonucleic acid, is the spiral-staircase-shaped strand of molecules that carry the code by which cells duplicate themselves.