
Radiation, pollution and urbanization are taking over natural selection
The Conversation Weekly
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The Evolution of Frogs
Hermann explained that they did a lot of tests and they, you know, looked at their blood and their immune systems. They were worried that sometimes melanin, like having extra melanin in your skin and a lot of animals, can cause some stress on cells but the frogs didn't seem to have this at all. So, because they were darker, that they were healthy, and because they werehealthy, they got darker. Because the darker frogs were more resistant to radiation, and all of a sudden, there was a ton of radiation in the environment, they were born.
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