Inside a Bacteriophage there is nucleic acid, like a nap is located inside the Bacteriophage. If you are talking about the structure of the Bacteriophage there is the head at the top of it. Then, the DNA kind of by the head of the Bacteriophage. You, then have the internal protein which is upwards towards the neck. ( the neck is in the middle) . Once, you get down to the actual center you will find the tail sheath, the tail sheath is kind of resembled to the spinal cord in a way. Finally, you have the tail fibers, now, the tail fibers are the protein part of the verion fiber.
If only half arrives then the orchestra wouldnt be correct. For a sentence fragment, if you have half of a correct sentence and the other is incorrect... it doesnt work.