Africa: Ancient Tooth Proteins Suggest Homo Erectus May Have Left a Genetic Legacy in People Today: [The Conversation Africa] For most of the 20th century, the model of human origins was a tree: with the trunk dividing into branches, and then twigs. Each species of human relative (hominin) was a neat, single branch. http://newsfeed.facilit8.network/TSd7Q8 #Africa #HomoErectus #HumanOrigins #GeneticLegacy #Anthropology