__________ shifts the range of variation in traits in one direction.
Fill in the blank(s) with the appropriate word(s).
Directional selection
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If a mutation prevented synthesis of the beta subunit of DNA pol III, which would be most affected?
A. DNA unwinding B. formation of RNA primers C. formation of the replication fork D. processivity E. removal of RNA primers Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about DNA polymerase? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
Ethylene oxide is gas that
A. is very useful for sterilizing heat or moisture-sensitive items. B. is potentially carcinogenic. C. is used as a 37% aqueous solution. D. is effective against all microorganisms except endospores and viruses. E. is very useful for sterilizing heat or moisture-sensitive items AND is potentially carcinogenic.
The genetic code is
A) triplet, overlapping, and not universal. B) triplet, non-overlapping, and universal. C) quarternary, overlapping, and non-universal. D) singular, non-overlapping, and universal.
To study the fine structure of a mitochondrion, which type of microscope is least appropriate?
a. light b. scanning electron c. transmission electron