Which of the following best describes Quorum sensing?
1) The regulation of chemotaxis in a bacterial guild through the use of autoinducer, this process is performed by both Gram-negative bacteria only
2) The regulation of gene expression in a bacterial guild through the use of autoinducer, this process is performed by both Gram-negative bacteria only
3) The regulation of gene expression in a bacterial population through the use of autoinducer, this process is performed by both Gram-positive and Gram-negative bacteria
4) The regulation of gene expression in a bacterial community through the use of autoinducer, this process is performed by both Gram-positive bacteria only