 This is supported by the evidence that gorillas and chimpanzees differ in their knuckle-walking related wrist anatomy and in the biomechanics of their knuckle-walking.
<fluency>  This is supported by the evidence that gorillas and chimpanzees differ in their knuckle-walking related wrist anatomy and in the biomechanics of their knuckle-walking.
 This is supported by the evidence that gorillas and chimpanzees differ in their knuckle-walking-related wrist anatomy and in the biomechanics of their knuckle-walking.