If a population is experiencing genetic
equilibrium it is not
a. stable.
b. mutating.
c. decreasing.
d. increasing.
e. evolving.
E
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Within an erythrocyte, the conversion of CO2 to bicarbonate is prevented from reaching equilibrium by the
A) temperature of the body. B) absence of a nucleus. C) presence of oxygen. D) efflux of bicarbonate from the erythrocyte via the chloride shift. E) presence of hydrogen ions.
Secondary succession occurs more quickly than primary succession mainly because ____.
A. improved soil is present from the start B. disturbances in the community exposes more soil C. rocky areas contain more minerals D. sunlight is more available E. nitrogen-fixing bacteria are present
You are adrift in the Atlantic Ocean and, being thirsty, drink the surrounding seawater. As a result
A) you quench your thirst. B) your cells become turgid. C) you dehydrate yourself. D) your cells lyse from excessive water intake.
All of the following statements are TRUE about orthologous genes except __________
a. Orthologs are genes that are homologous due to speciation. b. The principle of parsimony can be used in comparing the organization of orthologs. c. The insulin genes in mammals and birds are orthologs. d. The organization of orthologous genes shows only minor discrepancies between species. e. None of the above