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15. Natural selection and extinction Reorder

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Drag and drop the boxes into the correct order.

Peppered moths live on light coloured tree trunks and are eaten by birds.

They come in light and dark grey colours. The dark colour is the result of a gene mutation.

In the nineteenth century the colour of the moth population in the UK changed over several years from light to dark.

Put these sentences in order to explain how this happened.

They passed on the allele for dark colour to their offspring.
By the end of the nineteenth century the whole peppered moth population was dark coloured.
Light coloured moths blended into the background and this protected them from predators.
Pollution from the factories changed the colour of the trees from pale to dark.
Then the Industrial Revolution happened and many factories were built.
The dark moths survived and reproduced.
At the start of the nineteenth century the tree trunks where the moths lived were pale grey.
Light coloured moths survived to breed; the dark ones were eaten.
Now the dark moths had better camouflage from predators, so more of them survived.

This is your 1^st attempt! The marking algorithm gives more marks for getting the right order first time.

Pass Mark

70%