DNA is a linear molecule composed of four types of smaller ... these strands twist together to form a double helix. The structure of DNA can also be described as a ladder. The chemical backbones ...

In 1953, Francis Crick and James Watson first described the molecular structure of DNA ... which is composed of two linear strands that run opposite to each other, or anti-parallel, and twist ...

DNA (deoxyribonucleic acid), the molecular "blueprint" carrying the genetic instructions that influence the growth, ...