Based on the ABC hypothesis, what would be the structure of a flower from the outermost whorl that had normal expression of genes A and C and expression of gene B in all four whorls?
A) carpel-petal-petal-carpel
B) petal-petal-stamen-stamen
C) sepal-carpel-carpel-sepal
D) sepal-sepal-carpel-carpel
E) carpel-carpel-carpel-carpel
Answer: B
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