A frameshift is caused by ________ mutations.
A. insertion and nonsense
B. missense and insertion
C. missense and nonsense
D. deletion and insertion
E. nonsense and deletion
Answer: D
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By examining the phylogenetic tree diagrammed in the figure above, what conclusion can you draw about the species G. microti?
A) It evolved before G. intestinalis. B) It is more closely related to G. muris than to G. intestinalis. C) It should not be labeled a species distinct from G. intestinalis. D) It is part of a monophyletic group that also includes G. intestinalis.
If a mutagen such as EMS is used to produce numerous mutagenized cell lines for an organism, PCR can be used to select for a particular gene. However, what feature of this selected sequence is used to find the ones with mutations in that gene?
What will be an ideal response?
The sarcoplasmic reticulum releases calcium ions when stimulated directly by the
A. axon bulb. B. neuromuscular junction. C. sarcolemma. D. tropomyosin. E. T tubule.
When we are relaxed, only a small amount of air moves in and out with each breath. This is called
Select one: a. static volume. b. tidal volume. c. inspiratory reserve volume. d. expiratory reserve volume. e. residual volume.