Bacterial populations have been exposed to an antibiotic and have developed resistance to the antibiotic over time
Would this be an example of stabilizing selection, directional selection, or disruptive selection? Explain your reasoning. What will be an ideal response?
Concepts to Consider: This is likely directional selection, due to selection for the bacteria
with the resistance, and against those without the resistance.
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What key words does the question contain and what do they mean?
What will be an ideal response?
Red light and phytochrome are involved in which of the following plant growth responses? (Check all that apply.)A) Stem elongationB) Inhibition of seed germinationC) Elongation of etiolated shootsD) Detection of crowding by neighboring plants
What will be an ideal response?
Compare and contrast the metabolic diversity of bacteria in one of the two groups below
A. Obligate anaerobes, facultative anaerobes, and aerobes B. Autotrophic and heterotrophic bacteria What will be an ideal response?
The clonal selection theory states that
A. all T cells are exact clones of each other. B. all B cells are exact clones of each other. C. when a B or T cell is stimulated by encountering the correct antigen, it divides to form a clone of cells that will respond to the same antigen. D. when a B or T cell is stimulated by encountering the correct antibody, it divides to form a clone of cells that will respond to the same antibody.