Bacteriophage families, morphologies, genome types, and relative genome sizes (keeping in mind that in many cases substantial variance is seen within categories, particularly for the tailed phages, in terms of both genome size and virion morphology). Phages are arranged in order of decreasing genome sizes. Blue coloration indicates capsids, red indicates tails, and yellow refers to lipids. Tailed phages are members of virus order Caudovirales. The figure is partially based upon those used in Ackermann [17], Hyman and Abedon [18], and Abedon [19]. Note that virion particles are not drawn to scale.
