Genetic Recombination in Vibrio cholerae

Abstract

Some pairs of genetically marked strains of Vibrio cholerae when grown together and plated under selective conditions give rise to greater numbers of colonies than either strain plated alone; with other pairs, this phenomenon did not occur, but large number of presumptive recombinants were obtained when one of the strains was made lysogenic with a particular phage. The small number of markers made it impossible to do mapping studies. The evidence is suggestive of recombination, probably by phage-mediated transduction.