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Each plant was crossed with normal (leafy) pure-bred plants to generate the following phenotypic ratios:

F1 phenotype F2 phenotype

Line 1 x leafy all leaves 3:1 leaves/no leaves

Line 2 x leafy all no leaves 3:1 no leaves/leaves

Line 1 X line 2 all no leaves 13:3 no leaves/leaves

Why do two apparently similar plant lines produce such different results? For each cross depicted in the table, show the genotypes of all parental, F1, and F2 plants. Show the results of a total of three crosses.

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