INDEX 



659 



fusion — {contd.). 



of nuclei, see fertilisation 



diploidisation. 

 nucleus, 12, 438 



and 



Gagea, 418 



Galeopsis, 128, igo, 234 

 Gallus, j68 

 Galtonia, 306, XV 

 GAMETE, 5 



deficient, 316 et sqq. 



nucleoli, 21 



unreduced, 157, 188, 296, 414 et 

 sqq. 

 gametic reduction, 6 

 GAMETOPHYTE, 6 



differential viability, 316 et sqq. 

 gamma rays, 422 



Gasteria, interphase, 118, 487, 4g2 

 GENE, 167, 179, 245 



differentiation of, 303 



division, 501 



evolution, 332 



inert, 331 et sqq. 



mutable, 422 



mutation, 422 et sqq. 



theory of, see theory, 

 generative nucleus, 8, 10 

 genetic isolation, 79 

 GENOTYPE, 12 

 GENOTYPIC CONTROL, 53, 164 



of apomixis, 470 et sqq. 



of crossing-over, 288 et sqq. 

 between sex chromosomes, 390 



of meiosis, 399 et sqq. 



of mitosis, 395 et sqq. 



of mutation rate, 332 



of nucleolar organiser, 305 



of structural change, 419 

 gentian violet, 565 

 germ-plasm, 13 

 Giemsa, 565 

 gigantism, 222 et sqq. 

 Godetia, i^g 

 Goldschmidt, 384 

 Gomphocerus, 65 

 Gossyparia, 310, 381 

 Gossypium, 56, igi, 243 



twin haploid, 444 

 Gregarina, 534 

 growth rate, differential, 325 

 Gryllotalpa, j6y 

 Gryllus, 78 

 Guignard, 11, 534 

 Gustafsson, 438, 465, 475 



G\^mnosperms, 79, 84 

 gynandromorph, 68 



Haberlandt, 441, 465 

 Habrobracon, ^yy, 378, 459 



cell-size, 222 



mosaic, 448 



triploid, 216 

 haematoxylin, 565 

 Haldane, 372, 391, 555 

 half-mutant, see CEnothera. 

 HAPLO-DIPLOID SEX 



DETERMINATION, see sex 



determination, 

 haplo-diploid twin seedlings, 447 

 HAPLOID, 5, 61 



chiasmata, 254 



crossing-over, 262, 278 



differentiation (of sex), 336 



mosaics, 385 



origin, 444 et sqq. 



pairing in, 328 



pollen grains of, 195, 416 



polyhaploid, 199 et sqq. 



progeny, 4iy 



size, 222 et sqq. 



somatic doubling, 64 

 haplophase, 10 

 Hardy, 493, 522, 563 

 Hartmann, 17 

 Heitz, 40, 176, 307, 309, 330 

 Helianthus, 214 

 Helix, 469 

 Hemerobius, 57, XI 

 Hemerocallis, 125, 2iy 

 Hemiptera, 366, 368, 376 

 Hepaticae, 310, 366 

 HEREDITY, i, 14, 224 

 hermaphroditism, 17, 18 

 Hertwig, O., 5, S5 

 Hesperotettix, 78, 141, 364 

 HETEROCHROMATIN, 307, 330, 



See also precocitv. 

 HETEROGAMY, 18 

 Heteroptera, 368 

 HETEROPYCNOSIS. 309 

 heterosis, 136 

 heterothallism, 17 

 HETEROZYGOTE, 136 et sqq. 



complex, 335 et sqq. 



fragmentation, 140 

 See also hvbrid. 

 HETEROZYGOUS SEX, 136 

 Hevea, 404, 405 



