I think so. Not every mutation will cause a transformation in the amino acid sequence of proteins. Some might not even have an effect on the protein they encode at all.
The skeleton comprises of many hard and soft tissues. Hard tissues are the various kinds of bones that are present in the body. Soft tissues are the cartilages, marrow and the tendons that connect the various bones. Bones are the structures of the skeleton that provide a framework to protect the organs and give strength to the body. The cranium bone that is present in our head protects the brain and gives a rigid shape to our head. This rigid shape also makes it possible to hold the eyes, ears and nose in the right places.
The tadpole contains gills but doesn't have legs nor lungs.
however the adult frog contains the opposite. It has both lungs and legs but doesn't have gills. This is due to tadpole leaves in the water and the frog leaves on both land and sometimes in the water.
