GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hox genes
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induction genes
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organ identity genes
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morphogen
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Detailed explanation-1: -The ABCDE model for flower development proposes that floral organ identity is defined by five classes of homeotic genes, named A, B, C, D and E [1].
Detailed explanation-2: -TM6-like genes are usually expressed in petals, stamens and carpels in early stages of flower development and in ovules and transmitting tissue in later stages63, 64, although its function has been shown to be restricted to stamen development65.
Detailed explanation-3: -Determination of floral meristem identity and development of the floral meristem are known to be controlled by several genes. FILAMENTOUS FLOWER (FIL), LEAFY (LFY), APETALA1 (AP1), and CAULIFLOWER (CAL) genes are major players in this step (Bowman et al.
Detailed explanation-4: -The homeotic genes that determine floral organ identity in plants turn out to be regulated by trans-acting factors related to the Polycomb-group proteins that have long been known as regulators of homeotic gene expression in Drosophila.