Question

when mendel cross - pollinated purple - flowered and white - flowered parent plants, what did he observe? a purple - flowered plants disappeared in the f2 generation. b purple - flowered plants disappeared in the f1 generation. c white - flowered plants disappeared in the f2 generation. d white - flowered plants disappeared in the f1 generation.

Explanation:

Mendel's experiments showed that when he cross - pollinated purple - flowered (\(PP\)) and white - flowered (\(pp\)) pea plants (\(P\) generation), in the \(F_1\) generation, all the plants had purple flowers. This is because the purple allele (\(P\)) is dominant over the white allele (\(p\)). The white - flowered trait was masked in the \(F_1\) generation. In the \(F_2\) generation (when \(F_1\) plants self - pollinated), the white - flowered plants reappeared.

Answer:

D. White - flowered plants disappeared in the \(F_1\) generation.