# B-DNA

> English word · Noun

## Definitions
1. The default configuration of DNA in cells, right-hand twisting double helix with a significant size difference between major groove and minor groove, and approximately 10 base pairs per twist.
2. A DNA helix in such a configuration.

## Etymology
From B + DNA. Coined by Rosalind Franklin, for the second of two forms discovered during her X-ray crystallography experiments on DNA.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/b-dna