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.

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

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 ...

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

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 ...

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.

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