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==Leaf development==
The genetics behind leaf shape development in ''[[Arabidopsis thaliana]]'' has been broken down into three stages: The initiation of the [[leaf primordium]], the establishment of [[dorsiventrality]], and the development of a marginal [[meristem]]. Leaf primordium is initiated by the suppression of the genes and proteins of the class I ''[[Evolutionary history of plants|KNOX]]'' family (such as ''SHOOT APICAL MERISTEMLESS''). These class I KNOX proteins directly suppress [[gibberellin]] biosynthesis in the leaf primodium. Many genetic factors were found to be involved in the suppression of these genes in leaf primordia (such as ''ASYMMETRIC LEAVES1,'' ''BLADE-ON-PETIOLE1'', ''SAWTOOTH1'', etc.). Thus, with this suppression, the levels of gibberellin increase and leaf primorium initiates growth.{{cn|date=June 2024}}
==Flower development==
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