describe the concept of punctuated equilibrium in evolution and how it differs from the gradual process proposed by Darwin
Punctuated equilibrium differs from Darwin’s gradual evolution in that evolution is seen as long periods where there is little change in organisms, followed by a shorter period where there are rapid changes. Evolution is a sudden process rather than slow gradual change. The evidence for this comes from the fossil record where there are mass extinctions of organisms followed by the appearance of new species.
Punctuated equilibrium PBS, USA