506 



multiple alleles, 374 



persistence, 308 



primary action, 334, 341s 



pseudoalleles, 375 



time of action, 333 

 germ band, 121, 123 



cells, 270 



layers, 7, 172 



line, 121, 270 



ring, 228 

 germinal vesicle, 33, 36 

 gill slits, 8, 257 

 girdles, 276 



glycogen, 202, 203, 205 

 goldfish, 230, 247 

 Golgi apparatus, 368 

 gonads, 266, 268 

 gradient, 42 



cortical, 152, 191 



diffusion, 103 



echinoderms, 82s 



potential, 286 



regeneration, 311s 



yolk, 152, 191, 201 

 grafts, interspecific, 207, 300 

 grey crescent, 17, 146s, 174 

 growth, 279s 



functions, 281, 285 



gradients, 273, 288, 29OJ 



human, 283, 292 



inhibitors, 193 



interactions, 297s 



limits, 286 



livestock, 293 s 



negative, 285 



neurones, 383, 434 



oocyte, 33 



populations, 409 



relative, 287s, 432, 433. 438 



stimulators, 215 

 guinea-pig, 339, 397, 40i, 43° 

 gut, 256s, 260s 



post-anal, 265 

 Gymnophiona, 246 

 gynogenesis, 52 



hair, 259, 342 

 head, 253 



SUBJECT INDEX 



head, fold, 251 



process, 169 

 heart, 187, 209, 251, 289 

 heterochromatin, 36, 367, 375, 376, 382 

 heterogony, 287s 

 heteromorphosis, 309 

 hindgut, 251 

 hormones, 287, 297, 341, 417 



eye colour, 337 



insects, 136s 

 horse, 294 

 hybrid frogs, 212 



merogons, 136, 358, 403 

 hydrostatic pressure, 72, 73 

 hypoblast, 121, 156 



Ilyanassa, 68 



imaginal buds, 140s 



immunology, 92, 193, 207s, 287, 359, 396s, 



398 

 individuation, 12, 85, 130, 177, i88s, 



415s. 455 

 field, 25, 312,322 

 induction, 18, 176s 

 amphibian, 175s 

 ascidians, 115 

 assimilative, 190, 315 

 birds, 1 8 IS 

 coelenterates, 315 

 echinoderms, 86 

 feathers, 259 

 foreign species, 221, 412 

 homoigenetic, 193 

 host influence, 181, 457 

 insects, 129, 134, 13 5 

 kidneys, 267 

 lens, 255 

 limbs, 273 

 Limnea, 104 

 mammals, 239s 

 membranes, 213, 269 

 mesoderm, 172, 179, 198, 217, 467 

 microsomes, 212s, 413 

 movements, 172 

 planarians, 320 

 regionaht)s 199, 215s 

 strength, 350, 461 

 sturgeons, 225 



