Question
P=purple
p=yellow
S=smooth
s=wrinkle
QUESTION 11 Which of the following cubs should be offspring from the cross ppSs x ppSs? А B с D E F ОАО OD OE OF None of th
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Answer #1

The cross between ppSs and ppSs is given below:-bbss Х bøss L pS bpss ps buss sd ps poss ppss

The phenotype of the cubs depends on whether P and S are completely dominant to p and s or co dominant or incompletely dominant.

The ratio of genotypes is 1:2:1

As all the offspring have pp in their genotype they will have yellow phenotype.

Smooth and wrinkled phenotype will be in the ratio of 1:1 . Now depending on whether S is completely dominant on s or not we can decide the other phenotype.

A (yellow and smooth) and B (yellow and wrinkled) will definitely be the offspring from the cross.

If S will be codominant to s then E (yellow and smooth+wrinkled) will also be one of the offsprings of the cross.

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