Now the Marvel's unknown Inhumans, who don't even know Marvel's authors, but whose genesis leaves no other conclusion.
When four different cosmonauts in space were hit by one and the same kind of cosmic rays, ... Fantastic Four v1 # 1 (November 8, 1961)
... not one and the same ability developed by all four, but four different abilities!
Invisibility Fantastic Four v1 # 10 (January, 1963)
Plasticity Fantastic Four v1 # 4 (May, 1962)
Pyrogenesis Fantastic Four v1 # 3 (March, 1962)
Superhuman Strength Fantastic Four v1 # 2 (January, 1962)
Even months later, four other cosmonauts were hit by one and the same kind of cosmic rays, ... Fantastic Four v1 # 13 (April, 1963)
... four more different abilities developed!
Magnetism Fantastic Four v1 # 13 (April, 1963)
Intangibility
Invulnerability
Shapeshifting
It only allows one conclusion!
All eight had genetically engineered genes that were activated at near-death experience, not only to protect themselves, but also to unfold their existing inactive abilities!
Even the FF knew from the beginning that they are now more than humans! Fantastic Four v1 # 1 (November 8, 1961)
And through small tests by measure devices one can strengthen these abilities! Fantastic Four v1 # 22 (January, 1964)
A little remark ...
Genetically, humans and gibbons are most closely related.
Not so Ben and Miklho, a gorilla.
One recognizes their close kinship not only with reference to the same coat color, but also because that Ben has received next to Invulnerability also Superhuman Strength, as Miklho has received next to Superhuman Strengt also hInvulnerability.
But I would never mention this to Ben ... Unless you want to experience him angrier than the Hulk ... Fantastic Four v1 # 112 (July, 1971) Ultimate Fantastic Four v1 # 23 (November, 2005)
... who would actually die as a human by gamma radiation. Most do it, but not if one has genetically engineered genes. The Hulk wasn't formed by gamma radiation. The Hulk was released by gamma radiation! Incredible Hulk v1 # 1 (May, 1962)
Also, one doesn't die from the bite of a radioactive spider, if one has genetically engineered genes. Spider-Man was also released by radioactivity. Amazing Fantasy v1 # 15 (August 10, 1962)
Not only mutants are inhumans, but also all others who came into contact with deadly materials and thereby developed abilities. Daredevil v1 # 1 (April, 1964)
Also frailty and sickly so-called US soldiers become more active after taking a so-called "Super Soldier Serum". This toxic substance released the super athlete. Captain America Comics: 70th Anniversary Edition v1 # 1 (March 23, 2011)
Funny story when Steve had removed the serum, his genetically engineered genes deactivated. Due to his frailty and sickly condition, he needs an eternal near-death experience to keep activated his genetically engineered genes.