Despite evidence to the contrary, many scientists during the mid-twentieth century remained convinced that ____________________ were the carrier of genetic information
Fill in the blank(s) with correct word
proteins
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You lead a research team challenged with the task of creating a regulatory protein able to shut off transcription of a particular gene. You focus your design around a binding site called an operator that is associated with the promotor. The physical location of the operator most likely to affect transcription would be
A. upstream of the gene promoter. B. downstream of the gene promoter. C. internal to the gene itself. D. internal to the gene promoter. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about operators and repressors? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Of the organisms studied, which group has the
most species found to be threatened?
a. fishes b. angiosperms c. mammals d. amphibians e. insects
The influence of genetic drift on allele frequencies
increases as a. gene flow increases. b. population size decreases. c. mutation rate decreases. d. the number of heterozygous loci increases. e. random mating increases.
The rate and depth of breathing are governed by all of the following EXCEPT
a. chemoreceptors in arterial walls. b. baroreceptors in the diaphragm. c. the partial pressure of O2 in the atmosphere. d. a respiratory center in the brainstem. e. carotid and aortic bodies