Figure 2.4: The Multiregional Model This model posits that modern humans evolved around the world from different hominid populations. Out-of-Africa Hypothesis An alternative model, which has emerged relatively recently, maintains that modern humans evolved exclusively from African archaic H. sapiens populations and then migrated around the world to replace pre-existing hominids. This model is called the Out-of-Africa hypothesis, or the replacement model. According to this view, H. neanderthalensis