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casestudy1_plants_sp10 - sources of the drug Specifically...

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Name: ___________________________________ Discussion Section:_________________________ Case Study 1 – Plants – Due week of Feb. 8, 2010 in Discussion Section (10 points) Instructions: This case will be introduced in discussion section the week of Jan 25, and revisited in discussion the week of Feb 1. You are encouraged to discuss your answers in small groups during and outside of discussion. However, you are expected to formulate your final answer independently and turn in a unique answer in your own words . Your challenge: The widely known drug, ephedrine, is commonly extracted from shoots of an Asian plant species belonging to the genus Ephedra . You intend to insert the genes responsible for ephedrine production into various woody perennial species in order to create additional, commercially viable
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Unformatted text preview: sources of the drug. Specifically, you wish to create long-lived transgenic plants that produce high levels of ephedrine in an accessible part of the plant, namely the outer bark (cork) on stem or roots. Given this goal (and an inability to wait several years for trees to grow before you get some data), where in each of the two apices shown below would you need to verify the presence (or expression) of the inserted genes? Locate and identify the target (primary) meristematic cells. Also, to justify each of your two answers, I suggest that you create a flow diagram, with arrows linking the progression in production and development of cell types from meristem to outer bark. Shoot Apex Root Apex...
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