16)How can you show experimentally that that day-length signal is perceived by leaves?
17)What specific gene is induced as a result of day length? Wherein the plant this gene is activated? Then how does this gene activate other genes in the SAM?
18)Transition of SAM into inflorescence meristem is regulated by several genes. With known knowledge how do you explain what is happening during SAM to IM transition?
19)Using ABC model explain how the different structures are formed in developing flower. Now explain what will happen if any of the gene group is mutated.
16. If we can perform a series of experiments illuminating only a part of the plant while the rest of the plant parts are kept in darkness then we can determine if leaves are responsible for flowering being influenced by the duration of the available light.
17. Studies on the model plant Arabidopsis thaliana shows that transcription activation of the gene Flowering Locus T (FT) takes place by transcription factor Constans(CO) when long day conditions are induced. The FT protein which is synthesized in the leaves then move to the shoot apex and initiates the development of the floral meristem.
18. The shoot apical meristem (SAM) acts as stem cells and helps in the process of embryogenesis i.e. development of different parts of the plant body. When signalling molecules reach the SAM, they regulate and control the rate of cell division and also size of the stem cells formed from the SAM. Genes which prevent the process of differentiation are usually downstreamed which helps in the formation of inflorescence meristem which ultimately develops into the floral meristem.
16)How can you show experimentally that that day-length signal is perceived by leaves? 17)What specific gene...