Final answer:
Several models explain the transition from Homo erectus/ergaster to Homo sapiens, including Hybridization and Assimilation. The 'out of Africa' model suggests that modern humans originated in Africa and then migrated out, while the 'multiregional evolution model' proposes that Homo sapiens evolved from Homo erectus in different regions. Other models include the migration of Homo ergaster and the evolution of different populations.
Step-by-step explanation:
There are several models that explain the transition from Homo erectus/ergaster to Homo sapiens. Besides Hybridization and Assimilation, two commonly accepted models are the 'out of Africa' model and the 'multiregional evolution model'.
The 'out of Africa' model suggests that modern humans originated in Africa and then migrated out of the continent approximately 100,000 years ago, replacing all other human species. The 'multiregional evolution model' proposes that Homo sapiens evolved from Homo erectus in different regions around the same time. This model is based on fossil and archaeological evidence.
Other models include the idea that Homo ergaster migrated out of Africa and evolved into different populations such as the Dmanisi hominins in eastern Europe. The timelines and specific details of these models are still being researched and refined.