258 CHROMOSOMES IN HEREDITY : MECHANICAL 



Table 41 

 Interlocking of Chromosomes at Meiosis 



A. In organisms without complete terminalisation (the 



distinction between proximal and distal being unim- 

 portant), 

 (i) Between single pairs : 



Stenobothrus lineahts . Belar, 1928. 



Hyacinthus orientalis . 'D.,ig2gb. 



Rosa blanda . . Erlanson, 1931 b. 



PcBonia spp. . . Dark, 1936. 



Allium spp. . . Levan, 1933 c, 1935. 

 (ii) Within a multiple ring : 



Pisum sativum . . Pellew and E. R. Sansome, 193 1. 

 (iii) Double interlocking of single pairs : 



Lilium spp. . . Mather, 1933, 1935. 



Beal, 1936. 



Eremurus spectabilis . Upcott, 1936. 



B. In organisms with complete terminalisation. 

 (i) Between single pairs or multiple rings : 



{a) Proximal : 



Salamandra maculosa . Schreiner, 1906 b. 

 CEnothera spp. . . Hoeppener and Renner, 1929. 



Hakansson, 1930, a and b. 

 Catcheside, 1931 b. 

 Datura sp. . . . Blakeslee, 1929 (diagram). 



Campanula per sicifolia . Gairdner and D., 1931. 

 (b) Distal: 



Oenothera biennis . Cleland, 1926 a ; D., 1931 c. 



Campanula persicifolia . I.e. 

 (ii) Within a multiple ring (only in interchange heterozygotes). 



[a) Proximal : 



CEnothera biennis . D., 1931 c. 



Campanula persicifolia. I.e. 



(b) Distal: 



CEnothera and Campanula. I.e. 



