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1) Identify some of the issues that surfaced in the program. How did each of these issues impact how the family lived?One of the issues that emerge during the program is the unexpected event of the family: how adult humans walk on their feet and hands. It shows that this is an unprecedented occurrence in contemporary life but still had inherent areas of debate and speculations for evolutionary scientists and other experts interested in the relationship that exists between this quadripedalism and the bipedalism. That a brain abnormality was responsible is an important finding that removes the explanation of the event by extraterrestrial or superstitious means. This brings to mind the basic pathology traced to the centre of gait and balance-cerebellum. With this, Prof. Mundlos discovery of the location of culpable gene on chromosome 17 totally rules out any possibility for a miraculous hypothesis in the status of these siblings but points to the molecular basis for the transition from chimpanzee to man, from bipedalism to quadripedalism. This is where scientists still have work to do.However, to the family these issues are not separate: they combine into a single entity: when life presents with a difficulty or a seemingly disability, in it also lies a possibility for victory. This correlates with the impression of producer Jemina Harrison after their interaction with the family. The family is impacted with a new way of doing things, a means to living when there is an existing pathology, an avenue to survive in the face of supposedly abnormality of gait. Their warmth and humanity reflect that equanimity with which they have accepted the status quo.2) Describe some of the current theories of the origins of bipedalism (why we walk on two feet)Tool Use and Hunting Theory [Darwin, 1871]: man evolves bipedalism to use tools and engage in hunting.Carrying Food Theory [Etkin, 1953]: Man began to walk upright because it became imminent to carry food, and to do that effectively.Improvement in Viewing Distance Theory [Dart, 1959]: Our ancestors walking on two legs in order to improve their viewing distance, to enlarge their horizon of contemporary events.Display Behavior Theory: our ancestors evolve bipdelism in order to display their intrinsic nature and behavior not peculiar to other higher animals, and even our close allies: chimpanzees.Wading Theory [Hardy, 1960]: man evolved bipedalism as a result of wading in water; this method of bipedal wading is more efficient for activities in aquatic environment. The head can be kept above waters, and such respiration continues unabated.Locomotor Efficiency Theory [McHenry 1980]: this postulates than humans began walking on legs to improve locomotion.Thermoregulation [Wheeler 1984]: by this theory, bipedalism was evolved as means of thermoregulation.Environmental changes Theory: This postulates that our ancestors evolved bipedalism largely in response to environmental changes. This was in response to increased land mass and food distribution.Provisioning Theory [Lovejoy 1981]: Here, Lovejoy postulates that bipedalism is an inevitable adaptive measure for the monogamous hominid.Reduced Group size foraging (Isbell & Young 1996)]: Man evolved bipedalism as a result of reduced group size and for efficient foraging.

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