Flowers that develop in arabidopsis originate from concentric rings of cells. what class of gene(s) is responsible for the development of sepals?

a. a genes
b. c genes
c. b and c genes
d. a and b genes

The correct answer is option A.

Explanation:

A flower is a shoot which modifies as reproductive organ. The development of shoot to floral meristem and then differentiation of the meristem to flower is regulated by the gene level by the ABC model, explains the differentiation of the meristem to the various flower parts.

The sepals are the outermost layer that surrounds all other organs of the flower which is regulated by the A gene. The combination with the A gene and B gene controls the formation of petals and combination with the B gene and C gene controls the formation of androecium.

Thus, option-A is the correct answer.

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after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.