Chromosome 18 of the house mouse

Evidence is presented that places LG XV on chromosome 18 and shows that the centromere is at the Tw end of the chromosome. The linear order and distances of the three marker genes on Chr 18 are shown to be centromere--10--Tw--14--bc--11--sy. They occupy a total genetic length of 35 cM. The positions of the breakpoints of the two reciprocal translocations T(10;18) 18H and T(7;18) 5OH are discussed and shown to be closely linked to the sy locus.