22 Floral Formation (answers)

22 Floral Formation (answers) - SI Leader: Anita Vijapura...

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SI Leader: Anita Vijapura Spring 2010 BSC2011 02/22 Genetic Control of Flowering Flower formation involves a phase change from __vegetative__ growth to __reproductive__ growth -triggered by: a combo of environmental cues (day length) and internal signals (hormones) The production of a flower by a ___shoot apical meristem___ stops the ____ growth of that organ. The protein products of the floral ___meristem identity___ genes are transcription factors that regulate the genes required for the conversion into floral meristems. Thus, turning these genes on will induce the _____shoot apical meristem____ to flower and each leaf primordium that forms will develop into a specific type of ___floral organ____ based on ____its relative position___. Describe the characteristic floral pattern (development of floral organs): 1) Sepals- outermost 2) Petals 3) Stamens 4) Carpel The ___organ identity__ genes (aka: __plant homeotic genes__) regulate the development of this floral pattern. What determines which of these genes are expressed in a particular floral organ primordium?
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22 Floral Formation (answers) - SI Leader: Anita Vijapura...

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