Plaque: in bacteriology and genetics, a plaque forms in a bacteriophageplugin-autotooltip__default plugin-autotooltip_bigBacteriophage: viruses that infect bacteria. infection experiment. Bacteriaplugin-autotooltip__default plugin-autotooltip_bigBacteria: Single-celled organisms that also utilize DNA and the standard genetic code as all organisms on earth, but unlike eukaryotes do not have intracellular membranes and membrane-bound organelles. In this book we use bacteria and prokaryote interchangeably. are grown as a lawn (i.e., they evenly cover the entire surface of a Petri dishplugin-autotooltip__default plugin-autotooltip_bigPetri dish: a round dish, usually 5-10 cm in diameter, that can contain growth media to grow cells in vitro.), then injected with bacteriophageplugin-autotooltip__default plugin-autotooltip_bigBacteriophage: viruses that infect bacteria.. The phageplugin-autotooltip__default plugin-autotooltip_bigBacteriophage: viruses that infect bacteria. will kill and lyse bacterialplugin-autotooltip__default plugin-autotooltip_bigBacteria: Single-celled organisms that also utilize DNA and the standard genetic code as all organisms on earth, but unlike eukaryotes do not have intracellular membranes and membrane-bound organelles. In this book we use bacteria and prokaryote interchangeably. cells, leaving a clear spot on the lawn. This clear spot is called a plaque. Plaques contain phageplugin-autotooltip__default plugin-autotooltip_bigBacteriophage: viruses that infect bacteria. particles, and are equivalent to coloniesplugin-autotooltip__default plugin-autotooltip_bigClone: Depending on the context, this word can have a few different meanings:

* In the context of genes, cloning means that the physical identity of a gene has been found, and the gene has been sequenced. * In the context of DNA, a cloned DNA fragment is one that has been inserted into some kind of of phageplugin-autotooltip__default plugin-autotooltip_bigBacteriophage: viruses that infect bacteria..