Can you answer both questions please (b) Based on the ABC model, what would be the predicted phenotype of a double AB mutant? (c) In developing flowers of dioecious Spinach and Thalictrum, stamens are not developed in female flowers, and carpels are not developed in male flowers. What is the simplest model of ABC class gene expression that might explain this?

Biology 2e
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ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter32: Plant Reproduction
Section: Chapter Questions
Problem 5RQ: The stamen consists of a long stalk called the filament that supports the. stigma sepal style anther
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Can you answer both questions please 

(b) Based on the ABC model, what would be the predicted phenotype of a double AB mutant? 

(c) In developing flowers of dioecious Spinach and Thalictrum, stamens are not developed in female flowers, and carpels are not developed in male flowers.  What is the simplest model of ABC class gene expression that might explain this? 

Whorl 1
Whorl 2
Whorl 3
Whorl 4
Wild type
sepals
petals
stamens
carpels
A class gene Carpels stamens stamen carpel
mutants
B class gene
Sepal Sepal carpel carpel
mutants
Sepal petal petal sepal
C class gene
mutants
Transcribed Image Text:Whorl 1 Whorl 2 Whorl 3 Whorl 4 Wild type sepals petals stamens carpels A class gene Carpels stamens stamen carpel mutants B class gene Sepal Sepal carpel carpel mutants Sepal petal petal sepal C class gene mutants
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