Human Changes Over Time Flashcards
Primates characteristics
Grasping hands, bicuspid teeth, short nose, well-developed eyes and brain.
Hominid characteristics
Lack a tail and have similar skeletal and behavioural features.
Hominins characteristics
Bipedal and a relatively large cranial capacity
Homo sapiens
- large and complex brain of any of the hominins.
- have the ability to plan, abstract think, ritual, symbolism, large prey capture and advanced tool making
Hormon neanderthalensis
- co existed with humans and there is evidence the two species interbred.
- had the largest cranial capacity (allow this is hypothesised to be because of advanced vision rather than problem solving)
Homo erectus
-first of humans relatives to walk upright
Homo habilis
- oldest know species of the genus homo
- nicknamed the ‘handy man’
Homo heidelbergensis
- thought to be the species to use fire
- first to successfully live in colder climate
Genus Australopithecus
- Lucy
- flat nose, projecting chin, small brain case, curved fingers
- found in Eastern Africa
- walked upright on a regular basis but still climbed in trees
- genus homo is related to Australopithecus
How culture is accumulated
Knowledge is passed on to the the next generation by verbal, written or symbolic communication and this evolves over time.
Out of Africa theory
- most widely accepted theory for the origin of modern humans.
- all living modern humans evolved from a single common ancestor in Africa about 200,000 years ago
- spread out from Africa to the rest of the world, replacing the other hominins species
Multi regional theory
-proposes significant migration of homo erectus across Africa, Asia and Europe
-concurrent evolution of all groups into Homo sapiens.
This theory suggests there was interbreeding and flow between various populations in Africa and Eurasia.
Assimilation theory
- proposes that all living humans had an African origin
- then migrated out of Africa, occasionally interbreeding with archaic humans, resulting in hybrid populations.
Homo Denisovans
- only known from a finger bone and two teeth that were discovered in Denisovans cave in Siberia.
- closely related to both humans and Neanderthals but genetically distant.
- molecular studies suggest interbreeding between all three species.