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ABC model of flower development guided by three groups of homeotic genes. The ABC model of flower development is a scientific model of the process by which flowering plants produce a pattern of gene expression in meristems that leads to the appearance of an organ oriented towards sexual reproduction, a flower.
Dodsonian mimicry, named after the American botanist Calaway H. Dodson, is a form of reproductive floral mimicry where the model belongs to a different species than the mimic. By providing similar sensory signals to the model's flowers, the mimic lures the model's pollinators. Like Bakerian mimics, no nectar is provided. [17]
The term kusudama originates from ancient Japanese culture, where they were used for incense and potpourri; possibly originally being actual bunches of flowers or herbs. [2] The word itself is a combination of two Japanese words kusuri ("medicine") and tama ("ball"). They are now typically used as decorations, or as gifts. [3]
The ABC model of flower development. The first step of the transition is the transformation of the vegetative stem primordia into floral primordia. This occurs as biochemical changes take place to change the cellular differentiation of leaf, bud and stem tissues into tissue that will grow into the reproductive organs.
A. thaliana has been extensively studied as a model for flower development. The developing flower has four basic organs - sepals, petals, stamens, and carpels (which go on to form pistils). These organs are arranged in a series of whorls, four sepals on the outer whorl, followed by four petals inside this, six stamens, and a central carpel region.
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