Not really. Subsequent studies show that the original experiment by Kettlewell was valid. I'm not an expert in this field but the scientific papers seem sound.

Not really. Subsequent studies show that the original experiment by Kettlewell was valid. I'm not an expert in this field but the scientific papers seem sound. http://rsbl.royalsocietypublishing.org/content/8/4/609 http://rsbl.royalsocietypublishing.org/content/8/4/609 In any case, the peppered moth example is only an illustration of the idea of natural selection.