II. Onslow 



233 



seen at a value of about *M) is probably only dui* t-o tho small iiunilM.*r 

 of individuaU available. 



5 Colour-units 



Hybrid 

 parent loRt 



[2-9: 2-1] 



Colour-value of 



Intra parent 



Fig. 6. (Cf. Fig. ![).) Curve showing freijuency distribution of the orange 

 and yellow colour-values of family 'IGE, hybrid {Ititea x (jross.) x lutea. 

 The ? parent (hybrid) was unfortunately lost. 



Family '1015* (Fig. 7) shows almost exactly the same princijxil 

 features as the preceding curve. Segregation appears to occur at the 

 same point, and the homozygous yellows are again somewhat in excess, 



5 Colour-units 



Fig. 7. (Cf. Fig. 20.) Curve showing frequency distribution of the orange and yellow 

 colour- values of family "10-15 *, hybrid {lutea x gross.) x lutea. Parents missing. 



Bred by Dr Doncaster. 



