Flower color in snapdragons is determined to some extent by a pair of alleles that show incomplete dominance: red, pink and white, with pink being the heterozygous class. Flower shape, mushroom versus normal, is determined by an independently assorting gene where normal is completely dominant to mushroom. Two pink snapdragons with normal flowers were crossed and produced among 1600 total, 100 white mushroom-flowered offspring. What other types of offspring and how many of each are expected from this cross

Respuesta :

After crossing 100 white, mushroom-flowered kids with 100 pink, regular flowering offspring, the F1 offspring were all white.

What is the likelihood that the cross's progeny will bear white flowers?

The white-flower phenotype can only be inherited through the bb genotype. As a result, with this cross, you would anticipate that three of the four (75%) progeny will have purple flowers and one of the four (25%) would have white flowers. Mendel obtained the same percentages in his initial experiment.

In a cross between two pink-flowered parents, what are the predicted ratios of red, pink, and white flowers?

This will result in 1/4 WW (white), 1/2 RW (pink), and 1/4 RR (red) offspring. Consequently, we expect to see 1 red, 2 pink, and 1 white flower in that order.

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