Based on the ABC model, 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

Question

Quizplus · Accepted Answer

According to the ABC model, the combination of genes A, B, and C are responsible for the identity of the four floral whorls. In this scenario, gene B is expressed in all four whorls, which means that each whorl will have characteristics of both whorls on either side of it. Therefore, the flower would have two whorls of petals (outermost and second whorl) and two whorls of stamens (third and innermost whorl), resulting in the structure petal-petal-stamen-stamen.

Based on the ABC Model, What Would Be the Structure