| Evolutionary biologists debate fiercely about how macroevolutionary change emerges from microevolution. |
| Creationists are usually more careful about distinguishing between microevolution and macroevolution at this point. |
| These outcomes of evolution are distinguished based on time scale as macroevolution versus microevolution. |
| Instead, they say that macroevolution is nothing more than microevolution played out over long periods. |
| In general, macroevolution is regarded as the outcome of long periods of microevolution. |
| They accept such explanations for many events in what is known as microevolution, or horizontal evolution in my terminology, the process whereby diversity is generated within a fundamentally unchanged body plan. |
