modern humans - Handout for Anthro. 102 Modern Humans...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Handout for Anthro. 102 Modern Humans 12/8/09 AMH=anatomically modern humans, Ky = thousands of years ago Homo sapiens Sometime, probably close to 200,000 years ago, the first modern Homo sapiens evolved in Africa. Within 150,000 years or so, their descendants had spread across most of the Old World, even expanding as far as Australia. All contemporary populations—more than 6 billion living humans—are placed within this species (and the same subspecies as well). The Modern Human Skull: AMH=anatomically modern human, brain size avg 1340 cc, short, high braincase, sides of braincase relatively parallel, short face tucked underneath frontal lobes of brain, mandible with chin (inverted T) Where do modern humans come from? Models of Human Origins Complete Replacement Model Regional Continuity Model Partial Replacement Model Complete Replacement Model (allopatric speciation) Modern humans evolved in Africa and migrated out, replacing archaic populations in Europe and Asia with no gene flow. Proposes anatomically modern populations arose in Africa in the last 200,000 years. They migrated from Africa, completely replacing populations in Europe and Asia. NO INTERBREEDING!!! Does not account for the transition from archaic H. sapiens to modern H. sapiens anywhere except Africa. Regional Continuity Model
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/05/2011 for the course ANTHRO 102 taught by Professor F during the Spring '11 term at CUNY Queens.

Page1 / 3

modern humans - Handout for Anthro. 102 Modern Humans...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online