Which type of mutant would be most likely to produce a bushier phenotype?
A) auxin overproducer
B) strigolactone overproducer
C) cytokinin underproducer
D) strigolactone underproducer
D
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Indicate whether the statement is true or false.
Experimental mutations in the timing of Hox gene expression cause lab mice to develop deformed limbs. This is an example of
A. evolution of a new gene to code for the new morphology. B. homeosis. C. heterochrony. D. a change in spatial pattern of gene expression. 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 heterochrony? 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?
Organisms are classified based on whether they are made up of prokaryotic or eukaryotic cells. Which statement is correct about the organelles found in eukaryotic cells?
A) All the organelles have a very similar size and shape. B) All the organelles contain the same chemical compounds. C) Each type of organelle can be found in all types of cells. D) Each type of organelle has a specialized function.
In the Ames test, what happens when his- bacteria are exposed to a chemical and experience a higher level of growth than the control?
A) The his- bacteria now utilized histidine from the media. B) The reversion rate is lower than seen for spontaneous mutations. C) The his- bacteria utilized DNA repair tools to fix the mutation. D) A reversion mutation allowed the his- bacteria to regain their ability to make histidine (revert to his+). E) The tested chemical is regarded as a non-mutagen.