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A pink-flowered Mirabilis plant (RW) is crossed with a white-flowered Mirabilis (WW). What is the chance that a seed from this cross will produce a red-flowered plant (RR)? 1/4 0 1 1/2
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A pink-flowered Mirabilis plant (RW) is crossed with a white-flowered Mirabilis (WW). What is the chance that a seed from this cross will produce a red-flowered plant (RR)? 1/4 0 1 1/2

User Mohitp
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No chance. The pink Mirabilis has only one 'R', and the other does not. The resulting offspring will either be 'RW' or 'WW'.

This can be easily graphed as a punnet square- let me know if you need more help!
User Marco Fedele
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