DNA consists of 2 polynucleotide chains or strands, wound around each other such that they resemble a twisted ladder. This structure is referred to as the double helix.

In the middle of the 20th century, accumulating data suggested that DNA carries life’s genetic information. Biochemists around the world raced to determine its structure. The competition led to ...

Not all DNA looks like the familiar twisted ladder. Sometimes, parts of our genetic code fold into unusual shapes. One such ...

This way DNA can reproduce itself without changing its structure -- except for occasional errors, or mutations. The structure so perfectly fit the experimental data that it was almost immediately ...

Not all DNA looks like the familiar twisted ladder. Sometimes, parts of our genetic code fold into unusual shapes. One such ...

Earlier that morning, in the nearby Cavendish laboratory, the two scientists had discovered the structure of deoxyribonucleic acid, or DNA. This discovery changed the world of science and medicine ...

The G-loop acts like a landing pad for additional proteins. These proteins untie the G4 knot, break apart the G-loop and ...

In 1953, James Watson and Francis Crick uncovered the double-helix structure of DNA, changing the course of biology and genetics forever. Role of Rosalind Franklin's X-ray Images ...

Her colleague Maurice Wilkins was independently pursuing DNA’s structure, and she had grown so miserable there, largely because of their rivalry, that she had found a position at another university.

Previously no one could figure out how a simple molecule like DNA could carry large amounts of information. The double-helix structure solved the problem: DNA encodes information in the sequences ...

Revising the structure and replication of DNA? Test your knowledge of the process and need for DNA replication with this Higher Biology quiz.