INDEX 
Segregation, 1, 3 
Seiler, 86, 88-90, 137 
Selection, 286, 294, 296 
Serosa, 184 
Serranus, 95 
Sex chromosome, 172-173 
Sex-determining factors, 206 
Sex factors, 172 
Sex linked factors, 16, 195 
Sex ratios, 134-140 
Sheep, 109-112 
Shull, 97, 206, 225, 266 
Sieboldt, von, 122 
Silkworm, 37, 69, 122, 183, 206 
Smith, G., 96, 114 
Snapdragon, 69 
Solanum, 177 
Spheerechinus, 147 
Spherocarpos, 133-134 
Spermatogenesis of grasshoppers, 
186 
Stevens, 7, 90, 100 
Stocks, 69 
Stomps, 175 
Strobell, 112 
Strongylocentrotus, 147 
Sturtevant, 68, 130, 206, 248 
Sweet pea, 5, 36, 69, 268 
Sutton, 4 
Stylonichia pustulata, 285 
T 
Tanaka, 69, 206 
Tennent, 154 
Tetraploidy, 174-177 
Thelia, 115-116 
Thomas, 193 
Tobacco, 26 
Tomato, 26, 177 
Tower, 43 
Toxopneustes, 149 
Toyama, 122 
357 
Trident pattern, 237, 250, 259-260 
Triploidy, 130 
Trow, 75, 170 
Truncate, 241 
U 
Unit Character, 264 
Uroleptus, 305 
Vv 
Vestigial, 8-12, 21-25, 48-53 
Vigor, 240 
DeVries, 35, 263 280 
Ww 
Walnut comb, 270 
W-chromosome, 172 
Weismann, 77, 270, 277-278 
Wheat, 26 
White eye color, 16-20, 24, 31-32, 
54-59, 203 
Whitney, 97-98 
Wilson, 153, 187 
Winkler, 177-181 
With, 238 
Wood, 111 
Woodruff, 304 
Wright, 256 
x 
X-chromosome, 14, 15, 79-82, 198- 
200 
XX-XY type, 173 
Y 
Y-chromosome, 7,15, 79-82, 93, 172 
Yellow, 54-58 
Z 
Zeleny, 135, 260 
