The Human Chimp Aug 22nd.
-
Upload
ashley-patrick -
Category
Documents
-
view
217 -
download
0
description
Transcript of The Human Chimp Aug 22nd.
![Page 1: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/1.jpg)
The Human Chimp
Aug 22nd
![Page 2: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/2.jpg)
How Similar are Chimps and Humans?
• Implications
• What are the similarities?
![Page 3: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/3.jpg)
Molecular Clocks
• Used to measure genetic distances and to date times of evolutionary divergence
• How it works:
![Page 4: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/4.jpg)
DNA• The best molecule for use with molecular
clocks• To measure the change in DNA structure:
– Mix DNA from 2 species– Measure how many degrees of temperature the
melting point of the mixed DNA is reduced below the melting point of pure DNA from a single species
– A melting point lowered by 1°C means the DNAs of the 2 species differ by roughly 1%
![Page 5: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/5.jpg)
Family Tree of the Higher Primates
![Page 6: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/6.jpg)
Man the Hunter
• Unclear whether early Homo sapiens were hunters or scavengers
• Big-game hunting led to…
![Page 7: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/7.jpg)
The Human Family Tree
![Page 8: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/8.jpg)
The Great Leap Forward
• When modern humans replaced Neanderthals• 3 changes launched us in the direction of
modern humans– 4 mya – upright posture– 3 mya – Australopithecus robustus and A.
africanus– 2.5 mya – tool use
![Page 9: The Human Chimp Aug 22nd.](https://reader036.fdocuments.net/reader036/viewer/2022082602/5a4d1b8b7f8b9ab0599bec61/html5/thumbnails/9.jpg)
• 40,000 years ago in EuropeThe Great Leap Forward
Examples of Aurignacian Culture art