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Two corn homozygous, white-seeded corn lines were crossed and all progeny were red-seeded. These red-seeded F1...

Two corn homozygous, white-seeded corn lines were crossed and all progeny were red-seeded. These red-seeded F1 progeny were selfed, and the population segregated 9 red-seeded:7 white-seeded. Explain these results by determining the number of genes controlling seed coat colors and giving the genotypes of the parents.

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