Re: First details of nuKhan prequel comic
I doubt it. Besides, what possible 20th century genetic modification could there be that 23rd post alien-contact McCoy doesn't know of. If there was a way to heal radiation damage in the 20th century, it would be known of 300 years later.
Not if the technology had been outlawed and suppressed - which is exactly what happened after the Eugenics Wars
Star Trek Imponderables
, fun mashups of Trek's biggest continuity errors! Ep1