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The ABC model of flower development was first formulated by George Haughn and Chris Somerville in 1988. [9] It was first used as a model to describe the collection of genetic mechanisms that establish floral organ identity in the Rosids, as exemplified by Arabidopsis thaliana, and the Asterids, as demonstrated by Antirrhinum majus.
Original – Diagram showing the main parts of a mature flower. Reason Has EV, good quality. The image is a featured and quality picture in Commons. Articles in which this image appears ABC model of flower development, Double fertilization, Flower, Gynoecium, History of botany, Perianth. Sex, Stamen. FP category for this image
Different models of flower development like the fading boundaries model, or the overlapping-boundaries model which propose non-rigid domains of expression, may explain these architectures. [68] There is a possibility that from the basal to the modern angiosperms, the domains of floral architecture have gotten more and more fixed through evolution.
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.
The ABC model is a simple model that describes the genes responsible for the development of flowers. Three gene activities interact in a combinatorial manner to determine the developmental identities of the primordia organ within the floral apical meristem. These gene functions are called A, B, and C. Genes are expressed in only the outer and ...
English: English: A diagram illustrating the ABC model. Class A genes affect sepals and petals, class B genes affect petals and stamens, class C genes affect stamens and carpels. In two specific whorls of the floral meristem, each class of organ identity genes is switched on.
Date/Time Thumbnail Dimensions User Comment; current: 05:17, 8 March 2008: 363 × 509 (29 KB): Madprime == Summary == {{Information |Description=Diagram of the ABC model of Arabidopsis flower development |Source=self-made |Date=2008-03-05 |Author= Madprime |Permission=Please credit Madeleine Price Ball if used in a commercial context. |oth
The members of the MADS-box family of transcription factors play a very important and evolutionarily conserved role in flower development. According to the ABC Model of flower development, three zones — A, B and C — are generated within the developing flower primordium, by the action of some transcription factors, that are members of the ...