Question

This question may be completed independently or as a group exercise. In this lab, we have discussed the savanna hypothesis and how pre-australopithecines challenge this explanation of the evolution of bipedalism. If the savanna environment was not the factor favoring bipedalism, what was? Describe some of the advantages of bipedalism (be sure to think about what life would have been like for our ancestors millions of years ago when bipedalism evolved, including their risk of predation, food availability, etc.). Are there any disadvantages to bipedalism? If so, what are they? Taking into account the possible advantages and disadvantages, why do you think bipedalism might have evolved?

Answer 1

Bipedalism is the form of teristial locomotion where organism moves by means of its two rare limbs or legs.An animal usually moves in a bipedal manner hence the name bipedalism.It is essential adaption for Hominin progeny.The savanna-based theory is one of the earliest models to explain the model of bipedalism and gathered support from several anthropologists.According to this theory, evolution of bipedal locomotion would have been helpful in savanna because the posture will allow hominis to watch over tall grasses and hunt effectively.

ADVANTAGES OF BIPEDALISM:

1. Bipedalism allows homnids to free their arms completely

2. Enabling them to use tools effectively

3. use their hand for social display and communication

DISADVANTAGES

1.potential back injuries

2. lifting heavy objects

3.carrying heavy items put substantial strain on lower back