GAMETIC COUPLING AND REPULSION IN THE SILKWORM. 139 



B. 











Year 



Drosophila 

 (Fruit-fly) 



A)Sex-factorand B) pink eye-colour. 1 ' 

 a) 'No sex-factor' ^ and b) orange eye. 



eo.p.e.e 



Morgan. 



1911 



Drosophila 



A) Sex-factor and B) eye-colour 

 a) 'No sex-factor 3 and b) white eye. 







1911 



Drosophila 



A) Sex-factor and B) long wing. 



complete 



Morgan. 



1911 



A. Plants. 



Plant name 





System | Authors 



War 



Sweet Pea 



A) Erect standard and B) blue factor. 

 a) Hooded standard and b) red colour. 





Saunders, and 

 Punnett. 



1908 



Sweet Pea 



A) Dark axil and B) fertility. 

 a) Light axil and b) sterility. 



complete 



Bateson and 



1911 



Sweet Pea 



A) Normal flower-form and B) fer- 

 tility. 



a) 'Cretin 1 type and b) sterility. 



1:3:3:1 



Bateson and 

 Punnett. 



1911 



Sweet Pea 



A) Blue factor and B) long pollen. 

 a) Red colour and b) round pollen. 



1:7:7:1 





1911 



