What hypothesis about genes would explain this observation?

Because snapdragons (Antirrhinum) possess the pigment anthocyanin they have reddish purple petals. Show more Because snapdragons (Antirrhinum) possess the pigment anthocyanin they have reddish purple petals. Two pure anthocyaninless lines of Antirrhinum were developed one in California the other in the Netherlands. They looked identical in having no red pigment at all manifested as white (albino) flowers. However when petals from the two lines were ground up together in buffer in the same test tube the solution which appeared colourless at first soon turned red. As a control for this experiment the petals from each of the two white flowered plant lines were ground up separately and tested separately in buffer. For these controls the result was the same in both test tubes colourless! A positive control using petals from a red flowered plant was also carried out and the solution in the test tube was red as expected. . (a) What could account for the production of the red colour in the test tube when petals from the two plants were combined? . (b) What hypothesis about genes would explain this observation? . (c) Suggest genotypes for the two white flowered plants that fit with the observations. . (d) If the two white lines from California and the Netherlands were crossed what would you predict the phenotype(s) of the F1 and F2 to be? Show less

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