INDEX 



543 



Mole, 27, 28, 192 



marsupial, 262, 263 

 Molgula, 73, 74, 75 

 Moliusca, 74, 151,311 



of Galapagos, 291 



shells of, r47, 151-152, 154 



See also Ammonite; Cephalopod; 

 Nautiloid; Snail 

 Monkey, 27, 220, 221-225 



embryonic development of. 46 



macaque, 222 



New World, 221-223, 259, 261 



nutrition of, 85 



Old World, 221-22^227 



Rhesus, 125 



spider, 260 



See also Primates 

 Monogamy, 492 

 Monotremes, 189, 190,262 

 Montagu, M. F. A., 520, 522 

 Moody, P. A., 118, 119, 120, 121, 125, 



324, 328, 442, 449 

 Moore, J. A., 470, 471, 476, 477, 482 

 Moore, R. C, 172 

 Moose, 264 



Morgulis, S., 98, 103, 107 

 Morphology, defined, 20 



and serology, 115-121 

 See also Homology 

 Morrison, J. F., 102, 107 

 Moth. Ctenuchid, 370, i7/ 



isolated population of, 447 



mating in. 369 



mimicry in. 370, 371 



mouth parts of, 34-36 



peppered. 366-369. 367 



protective coloration in, 366-369, 367 

 Mountain, formation of, 131 

 Mouse, 117,447,448 



adaptation in, 14, 273 



field, 261,445 



marsupial. 263 



white-footed, see Peromyscus 



yellow, 389-390 

 Mousterian culture, 244 

 Mule, 459, 473 



Muller, H. J., 339, 347, 363, 491, 507 

 Murray, P. D. F., 409. 410, 426 

 Muscle segments, see Somites 

 Muscles, contraction of, 102 



release of energy in, 89 

 See also Somites 

 Muscular system, embryonic develop- 

 ment of. 55-59 

 Musk ox. 195 



serological relationship of. 120-/2/ 

 Mustard gas inducing mutations. 339 

 Mutation pressure, see Mutations, rate of 



Mutations, 9-10, 14-17. 82, 113, 254, 

 318, 336-351, 354-355, 357-362, 

 396-402 



advantageous, 360, 450-457, 468 



causes of, 338-340 



chemical, 103-104, 336-337, 338. 396, 

 498-499 



chromosomal, see Chromosomal aber- 

 ration 



control of, 339 



disadvantageous, 360, 450, 451-453, 

 456. 468. 490 



dominant. 347 



in Diosophila, see Drosophila 



efl^ects of. 360. 401-402, 453-454; 

 cumulative, 358; large, 358, 360-362, 

 414; small, 358. 360-362 



and environmental factors, 452 



fate of, 346-351, 436-439 



and fertility, 401-402, 450. 462 



gene, 396, 400-402, 438-439, 503 



and genetic assimilation, see Assimila- 

 tion, genetic 



and heterozygotes, see Heterozygotes 



induced, 451, 467 



lethal, see Genes, lethal 



loss of. 440 



random, 339-340. 420-421, 499 



rate of, 339, 359, 436-439, 451, 455, 

 500-501,503 



recessive. 346-347, 360, 438-439 



reverse, 437 



role of in natural selection, 450-457 



success of, 453 



systemic. 17. 361-362. 414, 503 



and viability. 401-402. 450. 452-454, 

 455, 456. 459, 462, 467 



See also Drift, genetic; Fertility; 

 Equilibrium; Genes; Natural selec- 

 tion; Viability 

 Myotomes. 56-57 



Names, common, 264, 308 



scientific, see Nomenclature 

 Napier, J. R., 227, 256 

 Nares, of proboscidea, 208, 212 



See also Nostrils 

 Nash, G.. 92, 105, 107 

 Natural selection, 3, 10-12, 254-255, 317, 

 322, 335-336, 351-360, 404, 450- 

 506 

 and allometry, see Allometry 

 essence of, 357-358 

 and genetic drift, see Drift, genetic 

 and genetic equilibrium, see Equilib- 

 rium 

 and heterozygotes, see Heterozygotes 

 intensity of, 359 



