The Punctuated Equilibrium Model of Evolution Suggests That New Species

question 14

Multiple Choice

The punctuated equilibrium model of evolution suggests that new species appear

• A) gradually; as groups become isolated, they slowly evolve through their own individual pathway.
• B) only after older species disappear from the fossil record.
• C) suddenly after long periods of time with little to no change.
• D) gradually after long periods of time with little to no change; as groups become isolated, they slowly evolve through their own individual pathway.
• E) gradually, but over very short periods of time, so that intermediate species are often observed in the fossil record.