330
SUBJECT INDEX
isolation in formation of, 78-79
Linnaean concept, 50, 55
morphological characters, 87
natural, artificial reproduction, 72
sound, 78
sympatric, 58, 78
taxonomic concept, 51
as term, 26
Specificity, of cells, 32
concepts, 26-27
developmental, 31
of germ layers, 19, 32
of organs, 32
of red cell permeability, 198
specification as term, 27
structural, hypothesis of, 196
of tissues, 31, 32
Spiders, chiasma localization, 125
cytology, 109
tetraploidy, 132
Spinach, 286
Spindle, and centromeres, 113, 114
and chiasmata formation, 123
poles, in Nereis, 30
Sponges, 26
Staining, chick embryo, 21-22
Starch, depletion, in potato cells, 248
Stationary states, concept, 35
Stenocatantops augustifrons, sex chromosome mechanism, 133
Sterility, hybrid, 66
Steroids, 186, 187
Strontium ion, 268
Strophotaxis, and orientation of insects,
170
Succinate, 217, 280
see also Tricarboxylic acid cycle
in Avena, 229
effect on malonate inhibition, 230
oxidation, 221
Succinoxidase system, 272, 283
and apple mitochondria, 278-79
Sucrose, effiect on Avena growth, 260
insulin transfer action on, 194
Sulfhydryl-containing enzymes, inhibition
257-58
Summation, heterogeneous, 152, 178
Sunflower, aerobic respiration, 236
Surface coat, embryo, 23, 24
Symmetry, bilateral, 16
studies, 32
Synthesis, polyploid grass species, 74
Systematic botany. See Botany
Τ
Tadpole, metamorphosis, effects of thyroid hormone on, 205
Tandem fusions. See Chromosome
Tapinoma, trail-laying, 159
Tastes, and odors, as releasing stimuli,
149, 150, 178
Tatera, polyploidy, 130
Taxonomy, and agamic complex, 91
and anatomical data, 60-61
and apomictic genera, 89
and biochemistry, 63-64
and classification system, 48, 50
contrasted to systematic botany, 52
and cytogenetics, 64
and cytology, 64-76
data, 52
definition, 51-52
and environmental effects, 80
experimental, 54
floristic, 54, 57
and genetics, 76-83
grass, 55
and Layia, 86-88
objective, 49
and paleobotany, 62-63
and pollen morphology, 61
problems, 52-53
and secondary xylem studies, 59-60
and seed embryology, 62
subdivisions, in acridid grasshoppers,
121
training, 53
Teleology, 34n.
Telomere concept, 115-16
see also Chromosome
Terminal oxidases. See Oxidases
Testosterone, 209
Tetraiodothyronine, 204
Tetraploids, 70, 71, 74, 75, 76
Tetrigidae, color polymorphism, 113
Thiouracil, 253
Thiourea, 253
Thyroid hormones, mechanisms of action,
204-207
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