Nucleic acid double helix - Wikipedia
In molecular biology, the term double helix[1] refers to the structure formed by double-stranded molecules of nucleic acids such as DNA. The double helical structure of a nucleic acid complex arises as a consequence of its secondary structure, and is a fundamental component in determining its tertiary structure.
Double Helix - The Definitive Guide | Biology Dictionary
2020年5月16日 · Double helix is the term used to describe the shape of our hereditary molecule, DNA. This instantly recognizable structure consists of two strands of DNA twisted around one another and connected in the center by hydrogen bonding.
The Discovery of the Double Helix, 1951-1953 | Francis Crick ...
The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes within cells.
Discovery of DNA Double Helix: Watson and Crick | Learn ...
The 3-dimensional double helix structure of DNA, correctly elucidated by James Watson and Francis Crick. Complementary bases are held together as a pair by hydrogen bonds.
Double helix Definition & Meaning - Merriam-Webster
The meaning of DOUBLE HELIX is a helix or spiral consisting of two strands in the surface of a cylinder that coil around its axis; especially : the structural arrangement of DNA in space that consists of paired polynucleotide strands stabilized by …
Understanding the Double-Helix Structure of DNA - ThoughtCo
2020年2月7日 · The double-helix shape allows for DNA replication and protein synthesis to occur. In these processes, the twisted DNA unwinds and opens to allow a copy of the DNA to be made. In DNA replication, the double helix unwinds and each separated strand is used to …
double helix | Learn Science at Scitable - Nature
The double helix is a description of the molecular shape of a double-stranded DNA molecule. In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which...