Chances are you've seen an illustration of DNA's double-helix structure and even pictures ... is a special kind of DNA known as Z-DNA. The DNA molecule is made up of four bases -- adenine (A ...

The DNA molecule was composed of the traditional sugar backbones and nucleotide pairs, but rather than the well-known right-handed spiral of the double helix structure ... its biological relevance. So ...

In 1953, Francis Crick and 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 other, known as ...

When Watson and Crick reported the double helix ... DNA replication more than an attempt to answer the most fundamental scientific questions about life, it also makes helicases models for the ...