Noun
The word is derived from helix
of Helix
Source: Webster's dictionaryA comparison of the two principal nucleic acids: RNA (left) and DNA (right), showing the helices and nucleobases each employs. Source: Internet
Alpha helices are shown as thick blue bands, and random coil as thinner blue lines. Source: Internet
An example of both aspects is the transcription factor Max (see image at left), which uses a helical coiled-coil to dimerize, positioning another pair of helices for interaction in two successive turns of the DNA major groove. Source: Internet
Chromosomal crossover is when two DNA helices break, swap a section and then rejoin. Source: Internet
Flagella are left-handed helices, and bundle and rotate together only when rotating counterclockwise. Source: Internet
Chemistry 12. Toronto: Nelson, p. 122. Most of the amino acids in hemoglobin form alpha helices, connected by short non-helical segments. Source: Internet