Board Thread:Questions and Answers/@comment-4441317-20160203074541/@comment-16461120-20160203081603

Terrigen is a naturally-occurring mutagenic mineral, so its use would be considered a form of biotechnology. Mutagens come in two classes, and because I don't believe Terrigen has ever been described as radiation, I believe it would be considered chemical, not physical.

Another, manufactured example would be Mutant Growth Hormone.