452 



INDEX 



Woolery, 239 

 Wortman, 56 

 Woyciki, 295 

 Wuist, 372 



X 



X-chromosome, 359 #, 380 ff. 

 Xanthophyll, 104, 105 

 Xenia, 302 

 Xylaria (fungus), 291 

 Xyris (grass), 236 



Y-chromosome, 359 jf., 380 #., 390 

 Yamanouchi, achromatic figure, 176, 179 



apogamy, 314 



blepharoplast, 91 



centrosomes, 79, 80, 82 



eyespot, 111 



fertilization, 289, 293 



pyrenoid, 109 



reduction, 222, 223, 232, 236 

 Yampolsky, 372 

 Yeasts, 206, 210, 292 

 Yolk, 134 

 Young, 213 

 Yucca (angiosperm), 256 



Z 



Z-chromosome, 363 

 Zacharias, 65, 193, 202, 404 



Zade, 349 



Zamia (cycad), 93, 288, 294 

 Zanardinia (brown alga), 111, 222 

 Zea (maize), 65, 122 



aleurone inheritance, 333 



chlorophyll inheritance, 332 



chromosomes, 349 



crossing over, 391 



linkage groups, 383 

 Zentralkorner, 203 

 Zettnow, 67 

 Zigzag stage of chromosomes, 151, 152, 



153 



Zimmermann, 110, 193 

 Zoja, 164 



Zoogonus (worm), 237, 244, 245 

 Zoospores, 85, 86, 112, 137, 222 

 Zukal, 202 

 Zweiger, 239 

 Zygnema (green alga), fertilization, 113 



mitosis, 210 



plastid, 103, 196, 108, 109 



pyrenoid, 109 



reduction, 222 

 Zygogenetic eggs, 318, 319 

 Zygomycetes, 290 

 Zygonema, 231, 233 

 Zygospore, 113, 222 

 Zygote, 222, 223 

 Zygotene, 231, 233 

 Zymogen, 66 



