Bio 1M03 - Test 2
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
Orangutans Social System - CORRECT ANSWER-solitary, bi-maturation, occasionally force
copulate
Gorillas Social System - CORRECT ANSWER-harem, conduct infanticide
Chimps Social System - CORRECT ANSWER-male dominated hierchy, multi male/multi female
groups, preform raids to capture females
Bonobos Social System - CORRECT ANSWER-female dominated hierarchy, strong female
bonds, lesbians
Reasons for Favouring Bipedalism - CORRECT ANSWER-1. helps regulate temperature
2. allows hominins to carry objects/forage
3. response to increased offspring dependence
,How are humans different from other apes? - CORRECT ANSWER-1. fully bipedal
2. long juvenile period
3. large brains
4. spoken language/symbolic culture
5. parabolic dental arcade, thick molar enamel, reduced canine teeth, large molars
Chimp-Human Split (how'd we change) - CORRECT ANSWER-- shift 4 legs to 2
- change in spine/skull/foot structure
- position of foramen magnum changes
- tibia/femur alignment alters
- pelvis flares/flattens
- change in muscularature
- MRCA 5-7 mya
Ancestral Features - CORRECT ANSWER-- small molars
- larger canines (relative to humans)
- large brow ridge
- small brain case
- receeding forehead
Derived Features - CORRECT ANSWER-- foramen magnum is forward (bipedalism)
- small canines (relative to chimps)
- flattened face
Laetoli Footprints - CORRECT ANSWER-- 3.5 mya
- illustrates bipedalism
, Phylogeny Controversy - CORRECT ANSWER-morphological info is subjective (hard to
distinguish homology and homoplasy), and we do not have DNA
Hunting - CORRECT ANSWER-Not uniquely hominin; sophistication however is (used tools)
Early hominin behaviour - CORRECT ANSWER-- shared food
- collected/hunted
- divided labour
- multi-male/multi-female
Types of Foraging - CORRECT ANSWER-1. Collection - plucking off trees
2. Extraction - requires effort
3. Hunting - cooperation
Division of Labor - CORRECT ANSWER-done by sex/age
males: hunt (peak age 30)
females: extract (peak age 50), more compatible with childcare
Hunting - CORRECT ANSWER-done by humans
required learning
- tooth marks on top of cut marks
Why share food? - CORRECT ANSWER-- sucess is unpredictable, requires teamwork and high
success yields too much food for one
- easily transport food home
- diverse diet results in better nutrtion
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
Orangutans Social System - CORRECT ANSWER-solitary, bi-maturation, occasionally force
copulate
Gorillas Social System - CORRECT ANSWER-harem, conduct infanticide
Chimps Social System - CORRECT ANSWER-male dominated hierchy, multi male/multi female
groups, preform raids to capture females
Bonobos Social System - CORRECT ANSWER-female dominated hierarchy, strong female
bonds, lesbians
Reasons for Favouring Bipedalism - CORRECT ANSWER-1. helps regulate temperature
2. allows hominins to carry objects/forage
3. response to increased offspring dependence
,How are humans different from other apes? - CORRECT ANSWER-1. fully bipedal
2. long juvenile period
3. large brains
4. spoken language/symbolic culture
5. parabolic dental arcade, thick molar enamel, reduced canine teeth, large molars
Chimp-Human Split (how'd we change) - CORRECT ANSWER-- shift 4 legs to 2
- change in spine/skull/foot structure
- position of foramen magnum changes
- tibia/femur alignment alters
- pelvis flares/flattens
- change in muscularature
- MRCA 5-7 mya
Ancestral Features - CORRECT ANSWER-- small molars
- larger canines (relative to humans)
- large brow ridge
- small brain case
- receeding forehead
Derived Features - CORRECT ANSWER-- foramen magnum is forward (bipedalism)
- small canines (relative to chimps)
- flattened face
Laetoli Footprints - CORRECT ANSWER-- 3.5 mya
- illustrates bipedalism
, Phylogeny Controversy - CORRECT ANSWER-morphological info is subjective (hard to
distinguish homology and homoplasy), and we do not have DNA
Hunting - CORRECT ANSWER-Not uniquely hominin; sophistication however is (used tools)
Early hominin behaviour - CORRECT ANSWER-- shared food
- collected/hunted
- divided labour
- multi-male/multi-female
Types of Foraging - CORRECT ANSWER-1. Collection - plucking off trees
2. Extraction - requires effort
3. Hunting - cooperation
Division of Labor - CORRECT ANSWER-done by sex/age
males: hunt (peak age 30)
females: extract (peak age 50), more compatible with childcare
Hunting - CORRECT ANSWER-done by humans
required learning
- tooth marks on top of cut marks
Why share food? - CORRECT ANSWER-- sucess is unpredictable, requires teamwork and high
success yields too much food for one
- easily transport food home
- diverse diet results in better nutrtion
