The role of assortment (spatial segregation) in evolutionary scenarios can be examined using simple microbial systems in the laboratory that allow controlled adjustment of spatial distribution. By modifying the founder cell density, various assortment levels can be visualized using fluorescently labelled bacterial strains in the colony biofilms of Bacillus subtilis.
Hölscher, T., Dragos, A., Gallegos-Monterrosa, R., Martin, M., Mhatre, E., Richter, A., & Kovács, Á. T. (2016). Monitoring spatial segregation in surface colonizing microbial populations. Journal of Visualized Experiments, 116, [e54752]. https://doi.org/10.3791/54752