[pasbesoin]

A comment on another thread, made about a day after my GP comment, mentioned an influential paper published in, IIRC, 1944 speculating on crystalline storage of complete human genetic information. (I'm assuming this would encompass a pre-double-helix understanding/conception of said data.)

That would tie into Clarke's story well (originally in several forms, that got consolidated into "The City and the Stars" with a 1952 copyright. And he would have been in a position (scientifically active) to have encountered it.

I don't know that any such thing happened. But, it was an interesting coincidence to run across that comment. (Sorry, I don't have it to hand.)