LIST OF TABLES 



Xlll 



Chapter IX 



Table 54. 

 „ 55- 



56. 

 57. 



58. 



Summary of Ring-forming Properties in Forms of OEnothera 



The Numbers of Species, Hybrids and Mutants in CEnothera 

 having Different Types of Configurations Compared with 

 their Frequency if Segments were Assorted at Random . 



Representative Examples of Sex Chromosomes . 



Examples of Haplo-Diploid Sex Differentiation . 



Primitive and Advanced Types of Sex Determination 



344 



349 

 366 



377 

 393 



Chapter X 



Table 59. Chromosome Pairing in Two Strains of Crepis capillavis and 



in their Hybrids by C. tectorum ..... 400 



60. The Causal Relationships of Different Kinds of Non-pairing 



of Chromosomes at Meiosis . . . . . .401 



61. Exceptional Failure of Pairing not Due to Hybridity . 402 



62. Classification of Genotypically Conditioned Abnormalities of 



Meiosis ......... 404 



63. Numbers of Cells in " Tetrads " of Haploid Plants . .416 



64. Progeny of Haploids ....... 417 



65. Cases of Non-Reduction ....... 417 



Chapter XI 



Table 66. Cases of Non-Recurrent Parthenogenesis in the Angiosperms 



444-446 



,, 67. Methods of Suppressing Meiosis with Diploid Parthenogenesis 450 



68. Methods of Apomixis in Artemisia nitida .... 452 



,, 69. Chromosome Numbers of Apomictic Species . . . 468 



,, 70. Cases of Polyploidy within the Species Associated with the 



Occurrence of Apomixis ...... 469 



Chapter XII 



Table 71 



72 



73 



74 



75 



76 



77 

 78 



Observations of Chromosome Coiling . . . .491 

 Examples of Arrest of Terminalisation by Change of Homo- 

 logy 511 



The Change in Chiasma Frequency from Diplotene to 



Metaphase with Partial and Complete Terminalisation . 513 

 Abnormal Spindles ....... 535 



Names Applied to the Centromere and the Centric Con- 

 striction ......... 536 



Relationship of the State of the Centromere to the Move- 

 ments of the Chromosomes ...... 540 



Mechanical Types of Chromosomes ..... 554 



Analysis of Certain Simple Structural Changes in Terms of 



Breakage and Reunion . . . . . •557 



