B-DNA

Meaning

Noun

  • 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.
  • A DNA helix in such a configuration.

Origin

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

Modern English dictionary

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