The image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectanglesindicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words,gene A is active in all cells in the rings labeled sepal and petals.SepalsPetalsStamensUEn CarpelsExplain what cue the floral cells are likely using to determine the cells that will differentiate into the different parts (ie. sepal, petal, etc.) based on the given scenerio.

Name: The image below represents a flower meristem viewed from above. At th
Uploaded: 2024-03-20T06:42:41.000Z
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Description: The image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectanglesindicate the regions of the meristem w

Introduction :- A flower is the reproductive part of a plant which takes part in reproduction. In a flower various structures are present : 1) Calyx - it includes a bunch of sepals ( greenish part of plant at the end of flower) 2) Corolla - it includes a bunch of petals (coloured part of flower or colored whorl of flower) 3) Stamen - it is the male reproductive part which includes : anther( exhibits male gamete or pollen grain) and filament while 4) - pistil is the female reproductive part of flower that includes style ,stigma and ovary ( exhibits female gamete or egg).These all structures are determined by expression of specific genes .A flower tissue is differentiated in all these structures .Answer :- There are total 5 floral identity genes : *APETALA* 1 (AP1) *APETALA* 2 (AP2) *APETALA* 3(AP3) *PISTILATA* (PI) *AGAMOUS* (AG) They forms different classes :- AP1+ AP2 = class A gene AP3+ PI= class B gene AG = class C gene There are 4 whorls in plants which are determined by these classes of gene : Whorl 1 : sepals formed by expression of only class A gene (A only) Whorl 2: petals are formed by mixed expression of classA and class B gene (A+B) Whorl 3 :stamens are formed by mixed expression of class B gene and class C gene (B+C). Whorl 4:carpels are formed by expression of class c gene (C only) . Class A gene are antagonist to class C gene, means if Class A gene are mutated then it gives expression of Class C gene and vice versa .Explanation :- The ABC model of flower development is a process by which flowering plants produces a pattern of gene expression in their meristem that leads to the appearance of an organs which will make the flower. This model is firstly discovered in Arabidopsis thaliana. The MAD-box genes are the conserved sequence motif .The genes which contains these motifs are called as MAD-box genes. These genes controls all major aspects of plant development which involves:- Male and female gametophyte development Embryo and seed development Root ,flower and fruit development . And in this question we are discussing about floral development only.