Sen Ruderman, where is the proof

[Haaheo okole puka]

Geochem,
I'd like to point this out also. Keeping it as simple as possible. Lets Consider said horticulturist finds a distinctive characteristic plant within their crop and it unknowingly contains a mutagen inspired by cosmic radiation. The horticulturist holds only one such specimen in hand and the chances of holding two like type specimens are effectively 0. Therefor the selective propagation is then subject to a natural breeding process where an unaffected plant will become part of the propagation process and its naturally equipped "filters" will alter the mutagen within a natural process that has occurred for millions of years.

In the lab, these mutagens are created within several specimens and those specimens are bread with one another and that is not something that will likely ever occur in nature.