Most models of sympatric speciation postulate the existence of
A. extinction and recolonization of local populations.
B. geographical barriers between populations.
C. disruptive selection based on resource use.
D. high levels of recombination between loci.
E. unequal numbers of males and females.
Answer: C. disruptive selection based on resource use.
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A) decreases initially and then begins to increase. B) remains the same. C) decreases. D) increases initially and then begins to decrease. E) increases.
This figure suggests that adding more and more nutrients over time will result in
A) an increase in species diversity. B) an increase in species evenness. C) a decrease in overall productivity. D) a decrease in species diversity.
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What will be an ideal response?
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Indicate whether the statement is true or false