Chapter 13: Homo Sapiens and Modern Human Behaviour Flashcards
what are some features of H. sapien anatomy?
- large, round skull
- high forehead
- flat face
- protruding chin
- gracile body
- long limbs
- small face and teeth
where is NOW believed to be the earliest evidence of anatomically modern humans?
Jebel Irhoud, Morocco
what is the approximate time of the earliest evidence of AMH?
~ 315, 000 years ago
what is the epicenter of Africa held together by?
gene flow
what modes are included in the Middle Stone Age?
mode 3-5
what are the two main tools of the Middle Stone Age?
blades and microliths
what is the difference between blades and microliths?
a blade is sharp on both sides but a microlith is flat/round on one side
what were some unique findings of the Middle Stone Age?
- non-local materials suggest long distance travel/trade
- heat treated materials
- decorative carving
- bone tools
who was the first hominin out of Africa?
homo erectus
when was the mass migration out of Africa?
60 000 years ago
what is the human gene tree?
a visual of how all humans relate to one another and to our common ancestors
species genetic diversity is a function of ____ and _____ of a population
age and size
humans have a very _____ level of genetic diversity
low
what is introgression?
when genes from older populations are introduced into a more modern population
who were the first hominins in Australia?
homo sapiens
what are the two possible explanations of the low genetic diversity of homo sapiens?
- our recent evolution
- our descendant from a small population (bottleneck event)
what were the climatic conditions 70-60 000 years ago?
the planet was cooler and dryer, sea levels dropped
how did the cooling and drying of the earth influence movement of homo sapiens?
the sea levels dropped which allowed humans to expand their range
what were the climatic conditions 50 000 years ago?
the planet started warming
how did the warming of earth 50 000 years ago influence movement of homo sapiens?
it allowed them to expand north
what is the tool technology that followed Mousterian?
Aurignacian
what are the mode 4 tools?
blades
when was the upper paleolithic epoch?
50-12 000 years ago
