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answers study questions 20 - Study questions 5. Regulation...

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Study questions 5. Regulation 1. The -35 and -10 regions are made of this polymer _________. The numbers refer to the _________ of the process of____________. The regions are bound by this molecule ________________ Answer polymer refer to the ___________ process molecule e DNA start transcription RNA polymerase 2. A negative regulatory protein that opposes transcription recognizes a binding site that is more likely to be overlapping with: d. -10 region It could actually overlap with any part of the promoter, as long as it works to block RNA Pol access Anthocyanins are red pigments formed by plants. They are responsible for the red or blue color of flower. Their biosynthetic pathway is as follows: Phenylalanine -> -> -> G -> H -> -> anthocyanins G is a common metabolite present in many cells and utilized by many metabolic pathways. Com- pound H is the first committed to the anthocyanin pathway: the more H is made, the more antho- cyanin is made, the more anthocyanins the redder the petals. The S gene encodes an enzyme that catalyzes the conversion of compound G into compound H. 3. A loss of function allele of the S gene is found in a pure breeding, white flowered variety of pansies. This variety is crossed to a pure breeding, red variety. What color do you expect in the first generation progeny? The most likely outcome is pink, or semidominance because the question states that "the more H is made, the more anthocyanin is made, the more anthocyanins the redder the petals". Red, or dominance, is also a less likely expectation. 4. If the individuals in the first generation progeny are interbred, what color phenotypes do you
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This note was uploaded on 10/06/2010 for the course BIO SCI 2A 54936 taught by Professor Comai during the Spring '10 term at UC Davis.

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answers study questions 20 - Study questions 5. Regulation...

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