After several generations of artificial selective breeding, a plateau is reached where artificial selection is no longer effective. This is called the _______
A. realized limit
B. realized heritability
C. selection coefficient
D. selection limit
D
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Which statement is TRUE about the fluid from the hydrothermal vents?
A) The fluid contains large amounts of oxidized inorganic materials. B) The fluid contains large amounts of reduced inorganic materials. C) The fluid contains large amounts of organic material. D) The fluid usually contains about equal amounts of organic and inorganic material.
The motor division of the PNS carries information away from the CNS.
a. true b. false
Hair is a character shared by all mammals, but not found in their ancestral lineage. Hair is therefore considered to be a(n)
A. shared derived character (trait). B. analogous structure. C. clade. D. shared ancestral character (trait).
Blocking the voltage-gated sodium channels will have what effect on the action potential?
a. The membrane potential will be more positive than normal (greater depolarization) b. The membrane will not depolarize (no action potential) c. The membrane will depolarize but not repolarize d. The membrane will hyperpolarize