EVOLUTION Flashcards
1
Q
Genetic similarity
A
96-99%
1
Q
Bipedality characteristics
A
- Femur became angled inward
- tibia became angled straight downward
- Knees could be locked to maintain upright posture
- Pelvis became broad
2
Q
Bipedality disadvantages
A
- difficult to learn
- unstable
- ineffective defence posture
- loss of grasping ability in feet
- slow
3
Q
Bipedality advantages
A
- Fleeing: height
- Foraging: long-distance travel
- Fighting: tool use
- Sex: transporting goods
- termal regulation
4
Q
Evolution of language
A
- Spine migrated perpendicular to base of skull
- Neck lengthened
- Jaw descended
- Face flattened
- Tongue shortened and receded
- Larynx lengthened and descended
- Pharyngeal cavity opened
5
Q
Brain developments
A
- increase in brain size
- Cerebral blood flow increased 600%
6
Q
Graph
A
bipedality led to tool use, language and long-distance travel, which led to hunting and gathering which led to brain growth
