Peppered Moth Natural selection Poster
Storyboard Text
- By 1900, the peppered moths' population in English cities were 98% dark coloured moths
- In 1924, a scientist called J.B.S Haldane recorded the natural evolution of the moths, based on the 2% of dark coloured moths, and by 1895 it was 95%, caused by the change of environment and a test based on Darwin's theory on natural selection
- Like other insects, the moth can benefit from blending into its environment. this ,eans its colouration should match with the trees on which they land on. So when the trees starts to change, it also causes the moths to change their colours.
- Dark moths live longer in a dark forest, so they breed more, responding to natural selection. Ober 100 other species of moths were observed to darken over time in these polluted forests, the effect is also known as Industrial melanism
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