It depends on how well read the coroner was, but people were having ideas about hereditary information that were pretty close to reality for decades before the

It depends on how well read the coroner was, but people were having ideas about hereditary information that were pretty close to reality for decades before the discovery of the double helix structure of DNA (it was isolated almost a hundred years before Watson and Crick) https://en.wikipedia.org/wiki/Friedrich_Miescher https://en.wikipedia.org/wiki/Friedrich_Miescher https://en.wikipedia.org/wiki/Nikolai_Koltsov https://en.wikipedia.org/wiki/Nikolai_Koltsov