INDEX 



\ 



Acaiina, 42 

 Acrididae, 43, 95 

 .4 rg ilatritic u rn , 9 2 

 Ae/iculufi earnca, 92 

 Aleuas vUticollis, 9') 

 AlcuroJidar, 42 

 Allo-polyploid}^ 45 

 AlyJus, 79 

 Aniitosis, 7 

 Anaphase, of mitosis, 23 



of first meiotic division, 

 64 



of second meiotic division, 

 67 

 Anasa tristis, 79 

 Aneuploidy, 46 

 Annelida, 42 

 Arachnida, 42 

 Archimerus, 79 

 Artemia salina, 13 

 Ascaris lumhricoide.s, 32 



megalocephala, 11, 29, 30 

 Ascomycetes, meiosis in, 47 

 Asplanchna, 42 

 Asters, 13 



Auto-polyploidy, 45 

 Autosomes, 39 



Basidioraycetes, 47 



Belar, 9 



Bee, 81 



Bibio, 35 



Biscutella laevigata, 45 



Biston hirtarius, 17 



Biv^alent chromosomes, at 



meiosis, 54 

 Branched chromosomes, 32 

 Breakage (of chromosomes), 



92 



Cabbage, 92 

 Campanula, 88 

 Celerio euphorbia e, 74 



gain, 74 

 Central spindle, 14 

 Centrosome, 13, 14 

 Charices, 47 

 Chiasma, 56 



compensating, 73 



diagonal, 72 



formation and crossing- 

 over, 69 



frequency, 56 



(localized), 71 



reciprocal, 72 

 Chironomus, 35 

 ChorthippuSy 95 

 Chromatid, 11 



interference, 73 

 Chromocentre, 35, 39 

 Chromomeres, in salivary 

 chromosomes, 38 



at meiosis, 51 

 Clonal organisms, 

 Coccidae, 42, 43 

 Coleoptera, 42 



Complex heterozygotes, 84, 

 90, 93 



— meiosis in, 84 



— origin of, 93 

 Crossing-over, 69 

 Crustacea, 42 



Darwin, 105 

 Datura, 84 

 Deletion, 52, 108 

 Diakinesis, 62 



Differential segment (of sex- 

 chromosome), 41, 80 



125 



