Which of the following anatomical changes was NOT likely a contributor to the development of full bipedalism in hominins?

Question

Quizplus · Accepted Answer

Having no arch in the foot would not have been a contributor to the development of full bipedalism in hominins. In fact, having an arch in the foot helps with shock absorption and stability while walking upright on two legs. Therefore, this anatomical change would have likely hindered rather than helped the development of bipedalism. The restructuring of the pelvis, loss of opposable big toes, and change in the angle of knee joints that support body weight all would have been necessary adaptations for efficient bipedalism.

Which of the Following Anatomical Changes Was NOT Likely a Contributor