A cross between homozygous purple-flowered and homozygous white-flowered pea plants results in offspring with purple flowers. This demonstrates

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This demonstrates dominance, as the purple allele is dominant over the white allele. The offspring must have inherited one dominant purple allele from the purple-flowered parent and one recessive white allele from the white-flowered parent, resulting in the phenotype of purple flowers. This result is consistent with Mendelian genetics.

A Cross Between Homozygous Purple-Flowered and Homozygous White-Flowered Pea Plants