Table 1.

The frequency of crossing over associated with recombination at the LEU2 locus

	Spores with no crossing over			Spores with crossing over
A. Analysis of random spores from WYL237 bearing no heterologies around LEU2 (Fig. 1A)
Random spores	His−Ura+Ade−	His−Ura−Ade+	Total	His−Ura+Ade+	His−Ura−Ade−	Total	Total	% crossing over
Leu−	84	99	183	28	23	31	214	14
Leu+	17	81	98	127	14	141	239	60
B. Analysis of random spores from WYL191 containing heterologies flanking LEU2 (Fig. 1B)
Random spores	His+Ura−Ade−	His−Ura+Ade+	Total	His+Ura−Ade+	His−Ura+Ade−	Total	Total	% crossing over
Leu−	379	331	710	33	23	56	766	7
Leu+	50	245	295	457	45	502	797	63
C. Analysis of Leu+ random spores from strains with and without SPO13∷HO (Fig. 1C)
Strain	His+Ura−Ade−	His−Ura+Ade+	Total	His+Ura−Ade+	His−Ura+Ade−	Total	Total	% crossing over
DAM528	144	8	152	28	115	143	295	49
SPO11
DAM509	145	4	149	7	119	126	275	46
SPO11
SPO13∷HO