AP BIOLOGY

CLASSIFICATION

CHARACTERISTICS OF PRIMATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What characteristic did early hominins share with modern humans?
A
Speech and language
B
The inability to live in groups
C
Small brains
D
Bipedalism
Explanation: 

Detailed explanation-1: -Some characteristics that have distinguished hominins from other primates, living and extinct, are their erect posture, bipedal locomotion, larger brains, and behavioral characteristics such as specialized tool use and, in some cases, communication through language.

Detailed explanation-2: -The shape of the thigh bones confirms Orrorin was bipedal. The earliest hominid with the most extensive evidence for bipedalism is the 4.4-million-year-old Ardipithecus ramidus.

Detailed explanation-3: -It has been suggested that bipedalism was selected for because it made it easier to see long distances when moving over areas covered with tall grasses. This would have been a useful advantage in scavenging for food and watching for big cats and other predators in open environments.

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