A bacteriophage is a virus that infects bacteria. The term is commonly shortened to phage.Bacteriophages are among the most common and diverse entities in the biosphere. Like viruses that infect eukaryotes (plants, animals, and fungi) there are many different phage structures and functions.
The top of phages is made up of a dice-like shape which has 20 sides and 30 edges. Inside it contains the genetic information, which is its DNA. This dice-like shape often sits on a tail that has leg-like fibres.