@article{mbs:/content/journal/micro/10.1099/00221287-84-1-70, author = "Gingold, E. B. and Ashworth, J. M.", title = "Evidence for Mitotic Crossing-over During the Parasexual Cycle of the Cellular Slime Mould Dictyostelium discoideum", journal= "Microbiology", year = "1974", volume = "84", number = "1", pages = "70-78", doi = "https://doi.org/10.1099/00221287-84-1-70", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-84-1-70", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: The genes conferring white fruiting bodies (whi), growth-temperature sensitivity in strain x9 (tsgD12) and resistance to methanol or acriflavine (acrA1) are linked in a group designated chromosome II. A gene, present in strain ax2 and involved in the ability of this strain to grow axenically (axe2), has also been located on chromosome II. An analysis of diploid strains derived from a diploid initially heterozygous for all known genes of chromosome II has revealed that mitotic crossing-over occurs during the vegetative growth of diploid cells. An analysis of the classes of diploid thus isolated leads to a provisional ordering of the genes on chromosome II: centromere, whi, axe2, tsgD12, acrA1. The final element necessary to establish the existence of a parasexual cycle in Dictyostelium discoideum has thus been demonstrated.", }