INDEX 



671 



Vicia Faha, XII 

 chiasma frequency, 16 g, 288 

 mitotic chromosomes, 37 

 non-reduction, 418 

 nucleoli, 40 

 X-rayed, 428 



Vicia narhonensis, 40 



Vicia sativa, 446 



Vilmorin, L. de, 13 



Viola, chromosome length, 56 

 hybrids, 171, 20 g 

 non-pairing, 400, 404 

 polyploid species, 228 



Viola Kitaibeliana, 227, 228 



Viviparus, 256 



vivipary, 440 



Vries, H. de, 338 



W-CHROMOSOME, 583 

 Weismann, 5, 85, 244, 302, 477 

 Wenrich, 105 



Wettstein, F. v., 222, 448, 466 

 White, 427, 431 

 Whiting, 378 

 Wilson, 142, 358, 574 

 Winge, 229, 388 

 Winiwarter, de, 572 et sqq. 

 Winkler, 434, 572 



X-CHROMOSOME. see sex 



chromosome. 

 X-ray, 331, 422 et sqq. 



and crossing-over, 553 



effects, 71, 555 et sqq., XII 



and gene anal3'sis, 334, 564 



photography, 564 



on pollen, 316 



technique, 571 



Yamamoto, 365 

 Y-CHROMOSOME, see sex 



chromosome. 

 Yucca, 81, 294 



Zacintha, 82 

 Z-CHROMOSOME, 583 

 Zea Mays, asynapsis, 291, 399 et 

 sqq., 418 



B chromosomes, 314, 493, 498 



centromere, 536 



chiasmata, 282 



crossing-over map, 283 



dioecious, 388 



endosperm, 12 



fragment, 14!) 



haploid, 445 



hybrid, igi, 208 



interchange, 262, 282, 430 



inversion, 265 et sqq. 



irradiation, 422 et sqq. 



monosomic, 61, 316, X 



non-homologous pairing, 166 



pachytene, 93. 166, 262, 304 



polymitosis, 279, 397, X 



progeny of triploid, 320 



ring chromosome, 74, 557 



segregation, 248 



" sticky " chromosomes, 420 



terminalisation, iii, 510, 511 



triploid, 119, 216 



trisomic, 282, jrp 

 Zea-Euchlcena hybrids, 284, 404 

 Zebrina, 80 

 Zephyanthes, 438, 453 

 Zygopetalum, 440 

 ZYGOTE, 5 

 ZYGOTENE, 87 et sqq. 



polyploid, 119 et sqq., 120, V 

 zygotic reduction, 6 



PRINTED IN GREAT BRITAIN BY THE WHITEFRIARS PRESS LTD. 

 LONDON AND TONBRIDGE. 



