The subclass of Chondrichthyes with an operculum is called:
a. sharks.
b. skates.
c. rays.
d. chimaeras.
e. hagfish.
D
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Recombination frequency between genes can be used to generate a
A. genetic map. B. physical map. C. restriction map. D. haplotype map.
In the 1940's, biologist Adolph Murie studied survival in Dall sheep in what is now Mount Danali National Park in Alaska
He found that Dall sheep that survive their first year of life have a high probability of surviving until they are around 9 years old; after that, they rapidly become easy prey for wolves and die at a very high rate. This pattern best fits a type ____ survivorship curve. Fill in the blank with the appropriate word.
Given what you now know, what information is most likely to produce the correct answer?
What will be an ideal response?
Excitatory synapses cause hyperpolarization of post-synaptic cells.
a. true b. false