The absolute refractory period characteristic of neurons is important in ensuring that action potentials travel in only one direction
Indicate whether the statement is true or false
TRUE
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We have a family of genes that code for different forms of myosin. How different do you think these gene sequences are from each other?
A. completely different, no identical base sequences B. completely the same, identical base sequence C. some differences in sequence, some similarities
When the prey population is below the predator isocline, the predator population is
a. increasing b. decreasing c. neither increasing nor decreasing
The experimental design in the accompanying figure was used to examine:
a. the relationship between genetic changes and metabolic enzymes.
b. the mutation rate of Neurospora.
c. resistance of Neurospora to genetic poisons.
d. toxicity of arginine metabolites.
e. growth of Neurospora in the presence of different antibiotics.
During your dissection of a fish, what structure would you have to remove to see the gills?
A. spiracle B. glottis C. operculum D. trachea E. jaw bone