Theories Of Bipedalism

Essay outline Theories of the origin of bipedalism. Introduction: There be dozens of theories that wipe out been constructed to explain the evolution of the humanity skillful posture and locomotion. It is unlikely that there was only one unique(predicate) reason why bipedalism was selected for (Harcourt-Smith 2007), besides it is realise that bipedalism provided a expel survival benefit. The theories to be discussed are arboreal bipedalism; the conjecture that our ancestors descended from the trees, allowing facile locomotion. expiration of the hands; the supposition that the get for hands pushed us upwards and lastly, the aquatic ape theory; wading in water thrust us to walk upright. The negatives and positives of each theory will be examined to determine their likeliness or apologue to which they would have affected the evolution of human locomotion. Theory one(a): Freeing of the hands The combination of tool use and the increasing make of free hands whitethorn have helped drive essential laterality in modern humans. a) Braccini (2010) researched the relationship between chimpanzee tool use and the ensuing effects on lateralisation and posture. b) During tool use, chimpanzees would automatically become more lateralized, especially if the troops capability was supported (Braccini 2010). Therefore tool use may have pushed our nearest ancestors upright.

a) What Braccini does not state is why chimpanzees and some other big(p) apes never evolved towards bipedalism since they all use tools (to an extent). b) Carsten (2010) discussed that the earliest of ancestors would have ! lead hands and arms for many reasons (self defense, food gathering, infant carrying), tho was most likely neither a trigger nor a promoter of walking upright. Theory Two: arboriform Bipedalism Instead of bipedalism stemming from an adaptation from knuckle-walking or other well-known theories, primitive ancestors may have adopted arboreal locomotion whilst animateness in tree canopies. c) Studying modern...If you want to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper