Chapter 4: Human Evolution (not on exam) Flashcards Preview

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Flashcards in Chapter 4: Human Evolution (not on exam) Deck (19)
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1

Gradualism

Large changes are caused by lots of small changes, over a long period

2

Punctuated equilibrium

Periods with no change that are punctuated with a sudden change

3

Taphonomy

The study of what happens to organic remains after death

4

Mosaic evolution

Phenotypic pattern that shows how different traits of an organism may evolve at different rates

5

Bipedalism

Upright, two-legged locomotion

6

Hominins

All members of the genus Homo who show evidence of bipedalism

7

Carrying model

Bipedalism freed hands for carrying food, children etc.

8

Effective heat management

Less body was exposed to direct sun

9

Greater endurance

Energy efficiency

10

Increasing height

Better vision, more food, and display

11

Walking in trees

Ex: Orangutans

12

A. Afarensis

Australopithecine, smaller brain than humans, split into 2 groups

13

H. Erectus

Pushed hominin range beyond Africa into Asia and Europe
40,000 years ago

14

Lower Paleolithic

Period of hominid development

15

Middle Paleolithic

Neanderthals/H.sapiens appear

16

Upper Paleolithic

Homo Sapiens & H. floresiensis

17

Neanderthals

Short, broad nosed, fair skinned, light hair, barrel-chested

18

Neanderthal extinction

Multiple theories. There was interbreeding between neanderthals and H.sapiens though

19

Denisovans

Only have teeth and a finger bone
DNA found in modern populations in Asia