Final answer:
A Punnett Square is used to predict all possible combinations of two parents' alleles for a certain trait.
Step-by-step explanation:
To predict all of the possible combinations of two parents' alleles for a certain trait in their potential offspring, you would use a Punnett Square. A Punnett Square is a diagrammatic tool used to determine the different genetic combinations that can result from a cross between two individuals.
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