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Practice problem

Genetic Mutations — Overview & Allele Frequency

By Valeri Natole
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A circular picture of the ocean, decorated with three blue shells on the side.

By ---=XEON=--- CC BY 3.0, via Wikimedia Commons

A certain species survives better if they have a thicker shell then if they have a thin shell. Over time, the gene pool changes so that more of the shells are thick. What happened that made some shells different than others?

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Type a concept, like “slope” or “photosynthesis”.

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