Neural crest cells form all of the following structures, EXCEPT
A. Cortices of Suprarenal Glands
B. Dorsal Root Ganglia
C. Enteric Ganglia
D. Preaortic Ganglion
E. Sympathetic Ganglia
Answer: A. Cortices of Suprarenal Glands
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Instantaneous speciation (select all correct choices)
A. is, by definition, a type of sympatric speciation. B. is typically caused when hybridization between species produces fertile, viable offspring that are reproductively isolated from both parental species. C. often involves the multiplication of chromosome sets, or polyploidy. D. is relatively common in plants but not in animals. E. none of these
Systolic pressure reflects the
A. contraction of the atria. B. relaxation of the atria. C. contraction of the ventricles. D. relaxation of the ventricles. E. heart rate.
The reason that many plasmids used in laboratories for transformation experiments contain an ampicillin resistance gene (ampR) is
A) so that the plasmid can replicate in bacterial cells. B) so that the plasmid can recombine with the bacterial genome. C) to enable the recipient cell to conjugate. D) to provide a selectable marker. E) to map point mutations.
Which of these are not ways that the dromedary camel has adapted to life in desert heat?
What will be an ideal response?