Question 15 Read the passage about punctuated equilibrium. The theory of punctuated equilibrium states that many species did not evolve for thousands of years. Instead, evolution took place when environmental conditions shifted, causing individuals to be in more extreme competition with one another. The theory of punctuated equilibrium is supported by fossil evidence of many periods of stasis. Which of the following statements does the theory of punctuated equilibrium challenge? a Many species remain in stasis for long periods of time. b Evolution occurs in groups of organisms through natural selection. c Evolution is a gradual process taking place in a stable environment. d Many organisms share a common ancestor.
1 answer
The theory of punctuated equilibrium challenges the statement: c Evolution is a gradual process taking place in a stable environment.
This is because punctuated equilibrium posits that species remain relatively unchanged (in stasis) for long periods, with significant evolutionary changes occurring abruptly in response to environmental shifts, rather than through a slow and gradual process in a stable environment.
