Recombinations of lateral suppressor, ls, with marker genes.
Williams, W.
The lateral suppressor gene was reported in TGC5:6. The Following ratios are of F2 progeny segregating from repulsion.
Chromo- some or + ls X^2 X^2 Tester Linkage ++ + ls tester tester tester X^2 ls Linkage ________________________________________________________________ al 8 562 172 190 68 0.538 0.344 0.867 f V 565 165 187 75 1.054 0.344 3.792 wt 7 585 183 167 57 3.096 0.344 0.258 dm IX 524 181 228 59 8.177 0.344 3.316 j\1 V 561 178 191 62 0.134 0.344 0.016 l\1 8 542 208 190 45 0.685 0.247 6.882 c IV 538 195 194 58 0.179 0.247 1.291 d 2 569 201 163 52 5.29 0.341 y 1 546 170 184 79 1.814 0.098 4.316 y 1 424 143 164 60 4.646 0.186 0.259 r II 568 180 162 69 1.029 0.098 3.015 t 10 440 152 148 51 0.011 0.186 0.0001 mc 7 438 165 167 47 0.621 2.479 e XI 443 153 162 5 1.83 0.392 0.114 u 10 471 179 134 33 9.065 3.977 _______________________ a V 436 173 169 39 0.092 0.392 7.768 a) 550 183 182 70 0.179 0.247 0.815 __________________________________________________ Total a 986 356 351 109 0.267 0.622 1.462Conclusive evidence on the linkage relationships of "ls" cannot be derived from the above figures. Although significant X^2 was obtained in one of the two families involving anthocyaninless (-a linkage group V), the independent segregations of ls - j\1 and ls - f make it unlikely that ls is a member of this linkage group. Further tests involving other markers on chromosome 8, such as "dl" and "bu" might prove fruitful.
One family provided information on the relationships between j and wt. The F progeny gave the following ratio:
+ + + j wt + j wt X^2 j X^2 wt X^2 Linkage 582 186 157 67 0.134 3.096 2.725These data are consistent with the results of Rick and Barton from which it was concluded that j and wt are independent.