Biodiversity - Primates Flashcards
1
Q
what suggests primates were originally aboreal (lived in trees)?
5
A
- flexible shoulders
- hands have thumbs
- claws
- eye face forward for depth of perception
- omnivorous diet
2
Q
2 types of primate
PA
A
- prosimians
- anthropoids
3
Q
2 examples of prosimians (pre monkeys)
A
- lemur (small eyes, rely on smell)
- tarsier (big eyes to see in the dark)
4
Q
4 features of anthropoids
A
- monophyletic
- poor sense of smell
- visual communication
- large brain
5
Q
difference between new and old world monkeys
A
- new have flat nose
- new have tail
- old have apposable thumb
6
Q
4 human features
A
- bipedal due to skeleton
- big brain
- less muscley jaw
- long post natal developement
7
Q
2 australopithecus features
A
- heavy jaw
- crested jaw
8
Q
3 homo habilis features
A
- large brain
- make simple tools
- 2.5 to 1.5 million years ago
9
Q
3 homo erectus features
A
- taller
- hunt in groups
- lived in colder climates
10
Q
2 homo sapiens sapiens features
A
- highly evolved
- modern humans
11
Q
3 homo sapiens neanderthalensis features
A
- large brain
- make tools
- capable of speach
12
Q
hypothesis for origin for modern humans
A
evolved from H. erectus in Africa then spread out over the globe, outcompeted Neanderthals
13
Q
evidence for origin of modern humans
A
- long coexistence of H. erectus
- transitional fossils only found in africa
- mtDNA
- diversity decreases out of africa
