The "double helix" of DNA refers to the physical shape of the molecule, an antiparallel coil. Imagine a zipper, wound up in a coil like an old-style telephone cord. In this analogy nucleotides are ...

Here is a view of the double helix -- the subject of Rosalind ... is a special kind of DNA known as Z-DNA. The DNA molecule is made up of four bases -- adenine (A), cytosine (C), guanine (G ...

Today, this molecule is called DNA ... James Watson described the molecular shape of DNA as a "double helix." Double-stranded DNA is composed of two linear strands that run opposite to each ...

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 ...

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

For the first time, scientists have witnessed the very moment DNA begins to unravel, revealing a necessary molecular event ...

Credit: James Graham/UC Davis When a DNA molecule replicates an enzyme called "helicase" unzips the double helix into two single strands. A second enzyme attaches a "primer" to each strand ...

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 ...

Feedback, a Lego fan, delves into a new science-related set, and learns that the model of a DNA double helix is the wrong way ...

An important specialty in this field—and a signature area of study at the University at Albany's RNA Institute—is DNA nanotechnology, wherein the base pairs that comprise DNA molecules are ...