Any Two Humans Are About 99.9 Percent Genetically Identical

A truly gap-free human genome sequence was only published in 2022.

Adenine, thymine, cytosine and guanine pair up to form the rungs of the double helix.

That is roughly 3.1 billion of the chemical letters that make up a person's DNA.

Their model relied on X-ray images by Rosalind Franklin, and Watson, Crick and Maurice Wilkins won the Nobel Prize in 1962.