if you mean the double helix in DNA.....
In 1953, based on X-ray diffraction images[123] taken by Rosalind Franklin and the information that the bases were paired, James D. Watson and Francis Crick suggested[123] what is now accepted as the first accurate model of DNA structure in the journal Nature.[5] Experimental evidence for Watson and Crick's model were published in a series of five articles in the same issue of Nature.[124] Of these, Franklin and Raymond Gosling's paper was the first publication of X-ray diffraction data that supported the Watson and Crick model,[125][126] this issue also contained an article on DNA structure by Maurice Wilkins and his colleagues.[127] In 1962, after Franklin's death, Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine.[128] However, debate continues on who should receive credit for the discovery, as the Watson and Crick article in Nature was based on Franklin's data without either acknowledgment or her knowledge.[129]
The Helix Structre. :)
In almost all cases, DNA is found has a double-helix.It's only some bacterial species that have single-helix DNA.
Spirillum
a double helix
There are no known proteins such as helix proteins. Alpha helix is a secondary structure element found in proteins that formed by amino acids which can form helix. Other secondary structures are beta sheets and random coils.
The double helix
Francis Crick and James Watson
any Alpha helix formations of protien.
DNA
Helix 4x can be found in many stores both online and local. The Helix x4 is on Target website, Amazon, or Ebay. Products on Ebay come with cheaper price, but the quality is not guarantee.
double helix
A double helix, like the sides of a spiral staircase.