A ___________ in DNA can result in dysfunctional protein production.
Fill in the blank(s) with the appropriate word(s).
Ans: Point mutation.
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A researcher is culturing several different strains of bacteria in the same petri dish. One day, he finds that all of the strains have died off except one. He continues to grow his bacteria for several weeks, and new strains develop
However, after a month he again notices that all but one of his bacterial strains have died off. This is an example of: A. acyclic selection. B. continuous selection. C. artificial selection. D. nonperiodic selection. E. periodic selection.
What naturally occurring process is responsible for keeping the earth warm enough to sustain life?
A. Oceanic currents B. Increasing biodiversity C. Greenhouse effect D. Variable microclimates E. Atmospheric circulation
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?
What will be an ideal response?
Microbes that are found in hot springs or other extreme environments are most specifically likely to be
a. Gram-negative. b. Gram-positive. c. archaeans. d. cyanobacteria. e. proteobacteria.