Human Evolution - Ch. 17

Question 1

Brain Size

Answer 1

Increases with social complexity

Question 2

Synapomorphies

Answer 2

Shared derived Traits

Question 3

Synapomorphies of Modern Humans

Answer 3

Bipedalism
Teeth/Jaw
Brain Size
Complex Tools and Culture

Question 4

Australpithecus

Answer 4

Diverse group of early hominin fossils, suggested adaptations for new ecological niches (Drier climate, living on ground instead of trees, different food sources)

Question 5

Shifts in climate and environment lead to

Answer 5

Hominins evolutions

Question 6

Hominins Transitional Fossils

Answer 6

7-4 mya

Question 7

Beginning Tool Manufacturing

Answer 7

3.4 mya

Question 8

Homo Erectus Ended

Answer 8

300,000 years ago

Question 9

Neanderthals

Answer 9

Showed complex behaviours like us, but disappeared 40, 000 years ago

Question 10

Homiin

Answer 10

Member of the clade that includes humans.

Question 11

Introgression

Answer 11

The movement of alleles from one species or population to another

Question 12

When did the primate clade originate?

Answer 12

End of the Cretaceous period

Question 13

Closest living relative to humans

Answer 13

Chimpanzees

Question 14

When did hominins diverge?

Answer 14

8 million ya

Question 15

Australopithecine

Answer 15

Hominin that were short, small-brained bipedal but still climbed.

Question 16

We were bipedal before

Answer 16

We had complex brains

Question 17

Homo appeared at least

Answer 17

1.8 million years ago.