One way to improve crop productivity is to modify flowering time. This can allow for multiple growing seasons in one year, and can also increase grain production because a smaller plant has lower resource needs. You are approached by an agricultural company that wants to create an early-flowering transgenic plant. Using your knowledge of Arabidopsis genetics, which genetic modifications would you suggest?
A. Inhibition of the embryonic flower ( EMF) gene or overexpression of the LEAFY (LFY) gene would work.
B. Inhibition of the LEAFY (LFY) gene or overexpression of the embryonic flower (emf) gene would work.
C. Inhibition of either the embryonic flower (emf) gene or the LEAFY (LFY) gene would work.
D. Early flowering is not possible in Arabidopsis, and is not likely to be possible in other plants.
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about EMF and LEAFY genes? What other information is related to the question?
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A. Inhibition of the embryonic flower ( EMF) gene or overexpression of the LEAFY (LFY) gene would work.
Clarify Question
What is the key concept addressed by the question?
· The question is asking you to analyze different genes that influence flower production.
What type of thinking is required?
· Analyze level:
o This is an analyze question because you have to break emf and LEAFY genes into their component pieces to understand how they function.
Gather Content
What do you already know about EMF and LEAFY genes? What other information is related to the question?
· EMF facilitates vegetative development, and must be suppressed to initiate flowering.
· emf is a loss of function mutation that flowers immediately.
· LEAFY is necessary for flower production.
· If overexpressed, LEAFY results in early flowering.
Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
· Genetic patterns that cause early flowering are sought in this example. LEAFY, if overexpressed, causes early flowering, as does emf.
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
· Analyze level:
o Answering this question correctly depended not only on distinguishing between emf and LEAFY, but on your ability to break down, or analyze, the causes of early flowering in Arabidopsis. If you got an incorrect answer, did you remember that early flowering can be initiated by the inheritance of emf, or that overexpression of LEAFY would also induce early flower formation? Did you have trouble breaking down the genetic causes of early flowering to determine the correct answer?
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