According to the author, after human left the stage, a new species would develop ______. A: in a process similar to that of human's evolution B: from dolphin, chimp or orchid to human again C: as much intelligence as human D: after a particular span of time

One of the most important aspects of the human bipedal gait is the forward propulsion generated by the extension of the leg behind the body (movement of the leg anterior to the body is referred to as flexion). The primary muscle involved in this action is the gluteus maximus, the largest muscle in the human body.While one leg is extending backwards, the other leg is moving forward. A group of muscles that includes the gluteus medius (which inserts into the greater trochanter of the femur) help stabilize the hip joing during this "swing phase," preventing the hip from dipping inferiorly.Looking at the posterior surface of the proximal human femur above, the attachment of the gluteus maximus (the posterior/inferior margin of the greater trochanter, extending inferiorly in a raised bony structure called the linea aspera) and the gluteus medius (the superior margin of the greater trochanter) are both visible.Thinking about the locomotor posture and behavior of a chimpanzee, would you expect to see the same pattern of morphology on the femur of a chimp? A: Yes B: No