Final answer:
In a Punnett Square, the parent alleles are placed on the top and left sides of the square. Each box within the grid displays the possible offspring genotypes from the combination of parental alleles, facilitating predictions of genetic outcomes.
Step-by-step explanation:
On a Punnett Square, the parent alleles go on the top and left sides of the square. A Punnett Square visually represents a cross between two parents by showing their gametes along the top (from one parent) and side (from the other parent) of a grid. For instance, if a pea plant with Violet flowers (dominant trait represented by 'V') is crossed with a pea plant with white flowers (recessive trait represented by 'v'), their alleles are represented along the top and side of the Punnett Square. Each box within the grid then represents the possible zygotic genotypes created from each possible combination of parental alleles. This allows us to predict the genotypic and phenotypic outcomes of a monohybrid cross or even a dihybrid cross.
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