Chapter 3 Part 2 Notes

Chapter 3 Part 2 Notes - Anth Notes Chapter 3 p 74-88...

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Anth Notes: Chapter 3 p. 74-88 Haplorhini (cont.) Postcranial (behind or below the head) anatomy in all hominoids: -broad chests with dorsal scapulae -short, stiff backs -long arms with mobile wrists -elbows -shoulders -no tail These traits are probably adaptations for suspensory locomotion (swinging/hanging) Apes vs. Monkeys -apes have greater freedom of movement in the arms, rotating shoulders -monkeys travel on four limbs and can only move arms front, back, and a little to the side Ex. gibbons (ape family) have long arms and hands specialized for brachiation (arm-over-arm movement) -apes have lost the tail because they are climbers, not jumpers, and have no need for a balancing organism such as the tail -African apes have abandoned the trees and have adapted to terrestrial life through knuckle-walking Human Characteristics -Humans are grouped with the large-bodied apes (aka “great apes”) in the family Hominidae -It has recently been discovered that humans and chimpanzees (and bonobos) have 2-3 times more genetic similarities with each other than either one has with gorillas -Similarities include: 1. Adult body size/sexual dimorphism in body weight (proportion of female weight to male)
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Chapter 3 Part 2 Notes - Anth Notes Chapter 3 p 74-88...

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