In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant that has sweet fruit and no spots. The F1 are intercrossed to produce the F2. a. What are the phenotypic ratios in the F2? b. If an F1 plant is backcrossed with the bitter, yellow-spotted parent, what phenotypes and proportions are expected in the offspring? c. If an F1 plant is backcrossed with the sweet, unspotted parent, what phenotypes and proportions are expected in the offspring?

Question

In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and
yellow spots (S) are dominant over no spots (s). The genes for these two
characteristics assort independently. A homozygous plant that has bitter
fruit and yellow spots is crossed with a homozygous plant that has sweet
fruit and no spots. The F1 are intercrossed to produce the F2.
a. What are the phenotypic ratios in the F2?
b. If an F1 plant is backcrossed with the bitter, yellow-spotted parent, what
phenotypes and proportions are expected in the offspring?
c. If an F1 plant is backcrossed with the sweet, unspotted parent, what
phenotypes and proportions are expected in the offspring?

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