The researchers were focusing on i-motif DNA, which has an interlocking structure resembling a knot, and was only confirmed to be found in living human cells in 2018.

Here, we assay molecular diversity for 19 nuclear introns and the mitochondrial DNA for wild Mallards (n = 50) across their Holarctic range and Yellow-billed Ducks (n = 30–75; Anas undulata) from ...

Gaia Vince delves into the story behind the discovery of DNA’s double-helix structure and reveals intriguing new evidence about Rosalind Franklin’s contributions.