Suppose a flower had normal expression of genes A and C and expression of gene B in all four whorls. Based on the ABC hypothesis, what would be the structure of that flower, starting at the outermost whorl? (A) carpel-petal-petal-carpel (B) petal-petal-stamen-stamen (C) sepal-carpel-carpel-sepal (D) sepal-sepal-carpel-carpel
Added by Jose Maria G.
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According to the ABC hypothesis, the floral organs are determined by the following gene combinations: - Sepals: A only - Petals: A and B - Stamens: B and C - Carpels: C only Now, let's analyze the given flower with normal expression of genes A and C and Show more…
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a Flower parts are arranged in four concentric circles: sepals, petals, stamens, and carpel. According to the ABC model of floral organ development in Arabidopsis, class A genes are needed to specify sepals, the A and B genes to specify petals, the B and C genes to specify stamens, and class C genes to specify the carpel. If a mutation occurs in one of the B genes, rendering it inactive, what will the resulting flowers consist of?
Flower parts are arranged in four concentric circles: sepals, petals, stamens, and carpel. According to the ABC model of floral organ development in Arabidopsis, class A genes are needed to specify sepals, the $A$ and $B$ genes to specify petals, the $B$ and $C$ genes to specify stamens, and class C genes to specify the carpel. If a mutation occurs in one of the $B$ genes, rendering it inactive, what will the resulting flowers consist of?
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