>Does this mean lambda phage form is some sort of biology's equivalent (or as close as it gets) of a universal constant Maybe this is somewhat true for bacteri

>Does this mean lambda phage form is some sort of biology's equivalent (or as close as it gets) of a universal constant Maybe this is somewhat true for bacterial viruses, but it's worth noting it's not universally true for phages. eg see [0]. And I can't think of any mammalian viruses that are lambda phage style lunar landers. Sometimes, virses are cyclinders [1] or some kind of roughly spherical geometric structure [2], although some are just kinda blob shaped [3] enveloped viruses (some viruses have an envelope-capsid-envelope structure). 0. https://en.wikipedia.org/wiki/Phi_X_174 https://en.wikipedia.org/wiki/Phi_X_174 1. https://en.wikipedia.org/wiki/Tobacco_mosaic_virus https://en.wikipedia.org/wiki/Tobacco_mosaic_virus 2. https://en.wikipedia.org/wiki/Mimivirus https://en.wikipedia.org/wiki/Mimivirus 3. https://en.wikipedia.org/wiki/Influenza https://en.wikipedia.org/wiki/Influenza