462 



Klinefelter's type male, 98, 146 

 knuckle, 275 



kynurenine and its derivatives, 273, 274 

 lactate, 336 



lactose locus {Lac), 358, 363, 366-369, 421^25, 424 

 larkspur {Delphinium), 259, 260 

 law of parsimony (Occam's rule), 10, 62, 199 

 lawn, bacterial, 384, 386 

 leptonema, 24, 28 

 lethal equivalents, 241 

 leucine, 285, 349-354 

 life, expectancy or span, 201, 249 

 light, ultraviolet, 176, 178, 200, 201, 302, 312, 314, 

 336, 337, 349, 357, 441 



visible, 176, 200, 301 

 lily meiosis, 24, 25, 26 

 limit dilution, 404 

 linear gene order, 128, 354 

 linkage, 111-//7, 169, i67, 376 



sex-, 81-92 

 lipid, 340, 369 

 lithium, 308 



liver, 141, 213, 275, 277,450 

 load of mutants, 239-249 

 locus (loci), 120, 121, 193, 222, 343, 366 

 locust, 306, 307 

 lysine, 285, 287 



lysis, 352, 353, 363, 375, 378, 384 

 lysogeny, 375, 377, 378, 390 

 lysozyme, 382 

 macromolecule, 307, 315 

 magnesium, 320, 321, 322, 336, 428 

 maize {Zea; see corn) 

 malaria, 234 



male, Lfr, Hfr, or Vhf, 357, 359, 360, 361 

 Malpighian tubules, 211 

 mammal, 296, 345, 404 

 manifold effects {see pleiotropism) 

 mannitol. 343 

 maps, 124, 135, 182, 183, 189, 361, 390, 391, 395-397, 



s-12 

 markers, selective vs. unselected, 352-353 

 marriages, cousin, 32, 233, 241 



nonrandom vs. random, 231-236, 233, 256 

 Mars, 224,441,442 

 mathematics, 227 

 mating, assertive, 231-232 



interspecific, 342 



in microorganisms, 387, 416, 418 



reciprocal, 9, 82, //7 

 maximal permissible concentration, 248 

 Maxy technique, 206, 207 

 mean, statistical, 58 

 measles, 78 



medicine, 241, 243, 244, 247, 404, 450 

 medium, basic minimal, 281, 332 

 meiosis, 23-30, 24, 25, 95, 121, 122, 124, 213, 416^11, 

 440 



in various organisms, 29, 88, 96, 154, 167, 282, 283 

 melanin, 50, 277 

 "memory," 367, 423 



mentality, 78, 79, 231,277 

 mercaptoethanol, 432 

 meromixis and merozygote, 359, 368, 379 

 metabolism, 266, 271, 215-278, 303, 332, 440 



and mutability, 181, 214, 337-338 



of phenylalanine, 231 

 metafemale and metamale, 103 

 metaphase, 17, 18, 25, 26, 28, 29, 86, 87 

 methane, 441 



methionine, 285, 332, 353, 375-376 

 methods for detecting point mutants, 204-208 

 methyl green, 301 

 metronome, 78 

 Mexico, 239 

 Micrococcus, 346 

 microcytemia, 36 

 micromanipulation, 271, 331, 357 

 micron, 178 



microorganisms, 193, 244 

 microspectrophotometry, 301 

 migration, 226, 242, 245, 253 

 miniature wings {m), 1 14, 1 17, 1 19, 128, 129 

 mitochondria, 428 



mitosis, 16, / 7, 18-1\, 24, 147, 213, 302, 440, 449 

 Modulator {Mp), 218-222, 449 

 moisture and penetrance, 72 

 mold (see template) 

 mold, bread {see Neurospora) 

 mollusc, 370 

 monad, 26, 120 

 Mongolism, 146, 147 

 monoecious, 94 

 monoploid {see haploid) 

 monosomic (haplosomic), 143, 145, 147 

 Moon, 442 



morphology, 68, 173, 256-257, 262 

 mosaics, 96, 105, 186, 268, 329, 354, 371, 412^\5 

 mosquito, 257 

 mosses, 95 

 moths, 87, 98, 140 

 mountains, 256 

 mouse, 65-68, 162, 193, 201, 248, 257, 263, 264, 266, 



267, 268 

 mucoid coat, 404 

 muscle, 95, 269 

 mustard gas, 200 

 mutability, 181, 200, 245, 248, 249, 336, 415 



genetic control of, 213-222 

 mutagens, 200, 214, 245-249, 281, 302, 332, 333, 336, 

 340, 349 



ami-, 337-338 



types of, 338, 400-402 

 mutant {see also gene, DNA, RNA), 3, 5, 111, 137, 

 206, 241, 245,248-249 



clearing, 390, 391, 392 



detection of, 138, 199, 204-206, 205, 281-282 



detrimental, 206, 208, 210, 229-231, 241 



dosage, 208 



intra-nucleotide, 400-402 



lethal, 62, 65-66, 69, 152, 156, 163, 208, 229, 234, 

 239, 240, 241 



