INDEX 675 
Wheat, eight chromosomes, 238 
Ghirka, 372 
Gladden, 339 
Glorup, 257 
Gypsy, 337, 338 
hybridization of, 294, 345 
inflorescence, 345, 346 
maintenance of type, 257 
mutations in, 369 
natural hybrids in, 348 
pure lines, 293, 336, 372 
rust-resistant, creating, 411 
varieties, 416 
sometimes cross-fertilized, 318 
Turkey, 336 
“‘Vilmorin Method,” 291 
Yellow-berry, 418 
Whedale, Miss, Antirrhinum, inheritance in, 147 
White, O. I., chimeras, 376 
fasciated plants, 130 
linkage in Pisum, 125 
White, T. H., germinal variations, 28, 370 
White eye color, inheritance of, in Drosophila, 74, 
87, 197, 208 
factor decreases vigor, 233 
mutation, 267, 269 
White eyed mutants, discovery, 74, 156 
Whitten, Ben Davis apple, 394 
bud selection, 398 
Whitethorn-medlar chimera, 378, 379 
Whymper, cretins, 526 
Wickson, on Burbank, 298 
Wieman, spermatogenesis in man, 538 
Williams, Gladden wheat, 339 
Gypsy-wheat, 337, 338 
remnant system, 334 
Willow, Cricket-bat, an F; hybrid, 365 
Wilson, E. B., heredity defined, 57 
problems,of inheritance, 4 
Wilson, E. H., rose varieties, 310 
seed and plant introduction, 299 
Wilson, J., color in horses, 467, 469, 470, 472, 473 
Dexter-Kerry cattle, 527 
Morton’s quagga, 566 
multiple allelomorphs, 474 
sheep, 476 
Wilt diseases, 413 
-resistant hybrids, 414, 415, 416, 417 
von Winiwarter, chromosomes in man, 538 
Winkler, chimeras, 375, 376, 377, 378 
graft-hybrids, 374 
Wodsedalek, chromosomes, horse, 519, 537 
determination of sex, 536 
sperm of mule, 558 
of pig, 540, 541 
Woltereck, effect of food supply, 23 
Hyalodaphnia, 23 
Wood, sheep, 549 
Wood and Stratton, experimental error, 430 
Work, varieties, 432 
W-chromosome, 205, 209 
Wriedt, Norway sheep, 463 
WZ type of sex-inheritance, 205 
animals showing, 209 
in birds, 539 
»< 
X-chromosome, 58, 74, 88, 110, 112, 114, 117, 119, 
121, 155, 196, 214, 267 
Xenia, advantage of, in experimentation, 360 
cause of, 150 
XY type of sex-inheritance, 196 
animals showing, 196, 214 
in domestic animals, 536 
Y 
Yak crossed with domestic cow, 520 
Y-chromosome, 58, 74, 88, 112, 114, 196, 214, 234 
Yields, method of comparing, 356 
Z 
Z-chromosome, 205, 209 
Zea, hirta, 358 
hybrids, 359 
mays, 358 
amylacea, 358 
everta, 358 
indentata, 358 
indurata, 358 
Zebra-ass hybrid, 557 
Grevy, 568 
-horse crosses, 468, 520, 557, 567, 570 
quagga-horse hybrids, 565 
Zebu cattle, 460, 461 
disease immune, 028 
for grading, 529 
Gujarat, 530 
< domestic cow, 520, 531 
Digitized by Microsoft® 
