Rates of Evolution
p. 115-118
Gradualism
? Small, continuous changes in phenotype can produce __________________________________ among species only by accumulating over many thousands to millions of years
? Population gradualism – __________________________________________________________
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? Phenotypic gradualism – __________________________________________________________
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Punctuated Equilibrium
? Phenotypic evolution is _____________________________________ in relatively brief events of branching ___________________________________ (10,000-100,000 y) followed by much longer intervals of evolutionary ___________________________________ (5-10 my)
? Explains the ______________________________________________ evolutionary changes exhibited by the fossil record