562 Subject Index 



theories. 157, 164 ff. 



t>'pes, 131 ff. 

 Potency of action, 366 ff. 

 Predetermination, 197 ff., 419. See also 

 Cytoplasm; Oocyte 



embryonic, 200 



in se.x, 447 

 Provirus, 241 

 Pseudoallelism. See also Allclism 



biochemical mutants, 170, 171, 174, 

 271, 272 



biochemistry, 50, 170, 173, 174, 271, 

 273, 486 



cotton, 398 



Drosophila, 168, 171, 174, 273 



fungi, 171, 173, 174, 272 



maize, 398 



and position effect, 167 ff., 183, 270, 

 399 



and sex, 340 



theory of, 168, 169, 173, 175 



Radiolaria, 301 



Regulation, embryonic, 408 ff., 417, 419 



Repeats. See Chromosomes 



RNA 



in Acetabularia, 53, 54, 278, 308 

 Caspersson's theories, 19, 277, 278, 



286, 305 ff. 

 in chromosomes, 28, 41, 45 

 in cytoplasm, 7, 25, 29, 41, 45, 69, 



305 ff., 314 ff., 331 

 in determination, 305 ff., 314 ff., 



325 ff. 

 in eggs, 12, 25, 69, 305 

 elimination, 12, 25, 54, 69, 70, 276, 



277, 278, 286, 305 ff., 310 

 as inductor, 325 ff. 

 nuclear origin, 25, 29, 41, 277, 305, 



308 

 in nucleolus, 25, 29, 53, 54, 277, 278, 



286 

 and plasmagenes, 308, 325 ff., 333 

 in plastids, 230 

 protein synthesis, 305 ff. 

 relation to DNA, 7, 19, 25, 29, 41, 



53, 54, 69, 278, 286, 305 ff. 

 in virus, 222, 244 

 Rodents. See also Guinea pig. Mouse 

 developmental genetics, 362, 369 ff. 

 morphological traits, 362, 369 ff. 

 mutants of pigment, 377 

 Rye, 16 



Sagitta, 199 



Salmonella, 49 



Sciara. See Chromosomes; Heterochro- 



matin 

 Scorpion, 11 

 Sea urchin 



chemistry of development, 330, 419 



DNA in cytoplasm, 54 



merogony, 214 



parthenogenesis, 10 

 Selachia, polyspermy, 54 

 Selection 



for bristles, 77, 88, 362 



for penetrance, 380 



polygenes, 75, 86, 87, 361 

 Self-duplication, 7 



Amphibia, 403, 458, 463, 466, 470 

 balance theory, 91, 337 ff., 425 ff., 



446, 470, 474 ff. 

 biochemistry. See Chlamydomonas 

 birds, 458 

 Bonellia, 458, 464 

 Chlamydomonas, 338 ff., 433, 470, 



473 

 development, 338, 458, 459 

 Dinophilus, 465, 466 

 dioecism from monoecism, 441, 443, 



470 

 dosage, 91, 335 ff., 356, 433 

 Drosophila, 90 ff., 337 ff., 356 ff., 432, 



455 ff., 471 

 Echallium, 445, 455, 456 

 fishes, 437 

 Fragaria, 435 

 frogs, 403 ff., 444, 471 

 genetics, 91 ff., 200, 337 ff., 425 ff. 

 Grubea, 463 

 gynandromorphs, 425 

 haploids, 338 ff., 469 ff. 

 hermaphrodites. See Monoecism 

 heterochromatin, 75, 90 ff. 

 hormones, 404 ff. 

 Hymenoptera, 473 ff. 

 Isopods, 466 ff. 

 Lymantria, 90 ff., 199, 200, 335 ff., 



425 ff., 458 ff., 470, 474 

 maize, 452 ff. 

 Melandrium, 75, 76, 338, 433, 435, 



437 ff., 471 

 modifiers, 93, 441, 447 

 mollusks, 452, 463, 464 

 monoecism, 436 ff., 463 

 mosaicism, 93, 94 



