Scientists have provided the most detailed account yet of the earliest stages of DNA replication, an essential process for ...

Chances are you've seen an illustration of DNA's double-helix structure and even pictures ... We've now zoomed in enough to see portions of the DNA strand. The DNA is wrapped around histones ...

A DNA double helix is made of two strands running in opposite directions. Each strand is made of four bases -- A, T, C, and G -- that pair up in specific ways to form rungs along the strands.

Watson and Crick ultimately used Franklin's images, along with their own evidence for the double-stranded nature of DNA, to argue that DNA actually takes the form of a double helix, a ladder-like ...

The double helix is a description of the molecular shape of a double-stranded DNA molecule. In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which they ...

so that matching base pairs interlocked in the middle of the double helix to keep the distance between the chains constant. Watson and Crick showed that each strand of the DNA molecule was a ...

For DNA to replicate, the helix must first unwind and break the DNA from a double strand into two single strands. Upon binding, helicases melt the DNA, breaking the chemical bonds holding the ...

Now, collaborating with Jim Watson, who had returned from Cambridge, I was taken with a challenge put forth in his famed double-helix manuscript. 1 In their 1953 publication on the DNA double helix, ...

Normally these letters combine in pairs to form the well-known double helix shape. However, some small lengths of DNA can exist as alternative shapes, which can affect how the instructions of the DNA ...

Scientists at the University of Leicester have captured the first detailed “molecular movie” showing DNA being unzipped at the atomic level – revealing how cells begin the crucial process of copying ...

The two strands of the DNA helix are unzipped by breaking of the ... RNA polymerase moves along the DNA strand. Free RNA nucleotides form hydrogen bonds with the exposed DNA strand nucleotides ...