u4 ao2 humans

Question 1

australopithecus to homo sapian

Answer 1

smaller eyebrow ridge - don’t need to protect from branches

foramen magnum is more forward - helps us stand straight

s curved spine - weight distribution

larger heel bone - helps stand

longer leg to arm ratio - longer strides, walk for longer

inwards femur - brings centre of balance to the knees

smaller teeth and parabolic jaw - being able to cook

shallow and bowl shaped pelvis - weight support

barrel shaped ribcage

flatten face

shrinking sagital crest

Question 2

hominoid

Answer 2

primates with no tails

bigger brain to body ratio
broader rib cage
broader pelvis
long fingers
y5 molars

Question 3

hominin

Answer 3

modern humans and other extinct human species including australopithicus

bipedal

Question 4

homo sapien

Answer 4

large brain to body ratio
well developed and fully opposable thumbs
hands capable of power and precision grips
the ability to make tools

Question 5

cultural evolution

Answer 5

due to a larger brain, hominins were able to create sophisticated cultures and transmit them to their offspring