Fossil evidence from the Cambrian period indicated a large, rapid spike in speciation of marine species accompanied by increases in the number of genera and families. This would support which model of evolutionary change?
A) quantum theory
B) saltationism
C) punctuated equilibrium
D) phyletic gradualism

Question

Quizplus · Accepted Answer

The large, rapid spike in speciation during the Cambrian period and the corresponding increase in the number of genera and families support the punctuated equilibrium model of evolutionary change. Punctuated equilibrium suggests that evolution occurs in bursts of rapid change (punctuation) separated by long periods of stasis, during which little or no evolutionary change occurs. This pattern is consistent with the fossil evidence from the Cambrian period.

Fossil Evidence from the Cambrian Period Indicated a Large, Rapid