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27 January, 20:35

In some flowers, a purple pigment is synthesized from a red precursor pigment. In the absence of all pigment, flowers are white. A pure-breeding plant with red flowers was crossed to a pure-breeding plant with white flowers. All of the F1 plants had white flowers. The F1 plants were crossed to each other, and the F2 consisted of 166 plants: 123 with white flowers, 32 with purple flowers, and 11 with red flowers. How do these results suggest that flower color is determined

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  1. 27 January, 23:52
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    The recessive allele of one gene masks the effect of a second gene. When both the genes are in dominant position the purple pigment is synthesized as dominant gene does not inhibit purple formed from red gene.

    Explanation:

    The recessive allele of one gene masks the effect of a second gene. When both the genes are in dominant position the purple pigment is synthesized as dominant gene does not inhibit purple formed from red gene.
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