General primate characterisitics

Question 1

GENERAL PRIMATE CHARACTERISTICS

Answer 1

1. hands and feet adapted for grasping
2. large brains
3. short jaws
4. flat face
5. forward looking eyes (close together on front of face)
6. complex social behaviour

Question 2

Major Features of Human Evolution

Answer 2

1. Brain size: modern humans have a brain size ~1300 cm 3 (3x size of modern
   chimpanzees)
    Complex language
2. Jaw Shape: shortening of jaws, flatter faces, changes in teeth
3. Bipedal Posture: upright posture and walking on 2 legs
4. Reduced size difference between sexes: less of a difference in the size of
   male and female humans (males 1.2x bigger)
5. Key Changes in Family Structure: monogamy, long term pair bonding,
   human infant dependency
    Enhanced learning
    Behaviour complexity

Question 3

what caused the major features of evolution

Answer 3

The tree dwellers and the collision between india and asia
 drier climate forests of Africa and Asia contracted
 increased area of savanna
5-7 mya
 humans and chimpanzees diverged from common ancestor

Question 4

Key Human Traits and Selective Advantages

Answer 4

Key Human Traits and Selective Advantages
 large brain - ability to learn and to communicate through
complex language.
 Bipedal motion - freeing the hands for carrying infants or making and using tools.
 dexterous hands provided the ability to fashion tools.