Z-DNA has a left-handed double helix structure. It is said to be found during the start of a gene. When does DNA replication occur? DNA replication occurs in the S phase of the cell cycle.

Revise structure and replication of DNA for your Higher Human Biology exam with Bitesize Scotland interactive practice quizzes covering feedback and common errors.

DNA, or deoxyribonucleic acid, is fundamental to your growth, reproduction, and health. Read about its basic function and structures.

Watson and Crick's discovery of DNA structure in 1953 revealed a possible mechanism for DNA replication. So why didn't Meselson and Stahl finally explain this mechanism until 1958?

Rosalind Franklin, James Watson and Francis Crick discovered the structure of DNA—that molecular blueprint for life—over 70 years ago. Today, scientists are still uncovering new ways to read it.

But this fundamental aspect of human biology has been poorly understood, chiefly because scientists lack the ability to closely observe the intricate process of replication. Attempts to do so have ...

The study has involved biochemical and X-ray crystallography techniques. This structure points to a high degree of flexibility, which is attributed to the capacity of this protein to carry out a dual ...

MSK researchers are shedding new light on G-quadruplexes, a type of secondary DNA structure that can cause DNA replication to stall. The structures are a potential therapeutic target in cancer. Image ...

The Discovery of DNA's Structure: They were hardly modest, these two brash young scientists who in 1953 declared to patrons of the Eagle Pub in Cambridge, England, that they had "found the secret ...