Based on a model shown by a Punnett Square, the kernel color is determined by different allele interactions. Dominant alleles can mask recessive alleles and they can be evidenced in a Punnett Square.
A Punnett square is a useful diagram used to determine the chances of observing different phenotypes (i.e. allele combinations) after a determined genetic cross.
A Punnett square can be used to predict the genotypes and the phenotypes in offspring of a given genetic cross.
In this case, the kernel color can be determined by dominant alleles, which are capable of masking the expression of recessive alleles in heterozygous individuals.
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