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What is a gene?

A gene is a section of DNA. It contains the instructions to make a specific protein.

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What do they do?

Cells make proteins by stringing aminno acids together in a particular order.

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Amino acids and proteins

Only 20 amino acids are used, but they make up thousands of different proteins.(

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Genes tell cells in what order to put the amino acids together.


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DNA also determines what proteins the cell produces and that determines what type of cell it is.(

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