Localization of Spore Markers on the Chromosome of Bacillus Subtilis.

Takahashi, I. (McMaster University, Hamilton, Ontario, Canada). Localization of spore markers on the chromosome of Bacillus subtilis. J. Bacteriol. 89:1065-1067. 1965.-Attempts were made to locate spore markers on the chromosome by determining the mapping distance of ery(r), str(r), phe, tyr, and ser markers to which the spore markers are closely linked. The results obtained indicated that locus sp N2-2 is located near the terminus and loci sp 170-2, sp H12-4, and sp 1 are distributed between the middle and the origin of the chromosome. These spore markers are not linked to each other. The above observation confirms our previous finding that in Bacillus subtilis spore markers are distributed randomly along the chromosome.