I can't think of any protective quality melanin would have from ionizing radiation. It is more likely that some other protective trait is adjacent to the genes causing darker frogs or that a mutation causing darker frogs was triggered by the radiation and happens to be advantageous locally.
(Nuclear engineer with minor in health physics and biology). However, I would be open to be corrected.
Avagpingham t1_iqtoaq1 wrote
Reply to comment by VoraciousTrees in Chernobyl black frogs reveal evolution in action by Picture-unrelated
I can't think of any protective quality melanin would have from ionizing radiation. It is more likely that some other protective trait is adjacent to the genes causing darker frogs or that a mutation causing darker frogs was triggered by the radiation and happens to be advantageous locally. (Nuclear engineer with minor in health physics and biology). However, I would be open to be corrected.