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Ulleksa [173]
4 years ago
12

What is positive controls used for?

Biology
1 answer:
Katen [24]4 years ago
7 0
A positive control is a group in an experiment that receives a treatment with a known result, and therefore should show a particular change during the experiment. It is used to control for unknown variables during the experiment and to give the scientist something to compare with the test group.
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