Here are the results of Kettlewell's Experiment.

 

Recaptured in unpolluted area:

 

Recaptured in polluted area:



14.6% Light Morph

4.7% Dark Morph


13.0% Light Morph

27.5% Dark Morph

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Industrial Melanism

It this about what you predicted?

 

Any ideas about why nearly twice as many moths were recaptured in the polluted area?