Does the son inherit from his paternal grandfather upon the death of his father, knowing that the grandfather has another living son?

The grandson does not inherit in the mentioned case due to the presence of a son of the deceased, as the son is of a higher degree. The grandson does not inherit alongside the son because of the presence of the closer heir, which is the son. However, if the deceased had no direct son, then his grandsons would inherit and take his place.