It seems to be a good argument for Lamarckism. Some kind of "genetic intelligence". I wonder how the probability weighs out.
Darwinism, conversely, is about selection from within a range of traits already present (i.e. beak size).
These frogs come in a variety of colors. Dark colors have a better fitness for the highly radioactive environment. Those are the ones that reproduce. This is textbook Darwinian evolution.
I don't understand "Why pick the former when the latter works."
No one is picking anything, it's all happening simultaneously. An epigenetic solution would reduce selective pressure for a genetic solution, theoretically.
Maybe the black frogs are at higher risk of melanoma. Nothing is ever free..
(checks page history, nope it's been around a while, I guess you didn't just write it to win this one)
Good catch anyway!