Question

This question may be completed independently or as a group exercise. In some cases, our bipedal adaptations have changed areas of our bodies so much that it is difficult (if not impossible) for these areas to perform other functions. For example, our pelvis provides the areas of muscle attachment we need, but its unusual shape makes human childbirth more difficult. The foot is another area that reflects the impact of bipedal specialization. What foot traits and corresponding functions seen in other primates have been lost in our feet? Why would we have lost helpful features such as this?

Answer 1

Answer: The foot traits that are present in the primates but have been lost in our feet are such as claws. Primates have claws and we have nails. The primates have big toes and bigger fingers as compared to human beings. These adaptation is due to their living style, their food etc. They need to hold their preys, manipulates things etc. Big toes for the grasping things etc.

We have lost features because we use our toe for supporting our body weight while walking. The hallux of human beings is used for the better balance of the body. It is not used as like in the primates.