OBJECTIVE LIFE SCIENCE
DEVELOPMENTAL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Class A genes, that gives
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Sepal
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Petal
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Stamen
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Carpel
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Explanation:
Detailed explanation-1: -The Class C Floral Organ Identity genes are necessary for the proper development of the stamens and carpels normally found in the third and fourth whorls of the flower. The Class A and C activities are mutually antagonistic, meaning in Class C mutants, the Class A activity expands to include the two inner whorls.
Detailed explanation-2: -The B gene functions are defined by the genes APETALA3 and PISTILLATA. The net effect of B gene mutations is that whorl 2 develops as a sepal rather than a petal, and whorl 3 develops as a carpel not a stamen.
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