Lupine cultivars Nemchinovskiy 846 (genotype NrNr and fruits – cracking beans) and Unicrop

Lupine cultivars Nemchinovskiy 846 (genotype NrNr and fruits – cracking beans) and Unicrop (genotype pgrg and non-cracking beans) were crossed. What is the probability of obtaining plants with non-cracking fruits from backcrossing of F2 hybrids with a plant from F1 with cracking fruits?

The probability of obtaining plants with non-cracking fruits from backcrossing F2 hybrids with an F1 plant with cracking fruits is in all cases equal to zero.

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