Bipedalism may have evolved because hominin ancestors were
A) above-branch quadrupeds.
B) below-branch, suspensory primates.
C) vertical clingers and leapers.
D) amphibians.

Question

Quizplus · Accepted Answer

The evolution of bipedalism is associated with the transition from above-branch quadrupeds to walking on two legs. This was likely an adaptation to living in open savannah environments with increased mobility for distances, tool-use, and the ability to see over tall grasses.

Note: Option B, C, and D are incorrect because they do not accurately describe the ancestral characteristics that led to bipedalism.

Bipedalism May Have Evolved Because Hominin Ancestors Were