Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The flower color trait in radishes is an example of which of the following inheritance patterns?

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The cross between a red-flowered plant and a white-flowered plant yielding all-purple offspring is an example of incomplete dominance. In incomplete dominance, the phenotype of the heterozygotes is intermediate between the phenotypes of the two homozygotes, which is why the offspring are purple rather than red or white.

Radish Flowers May Be Red, Purple, or White