VII 



DOMINANCE 



75 



find many more such cases of the action of inhibitor 

 factors, and we must be prepared to find that the same 

 visible effect may be produced either by the addition or 



1 1 



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i 



\nllil ' 



ill 



i 



«< 



^^HL 





mi 



m | 





WJ 1 



W ' 







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Fig. 14. 



Ears of beardless and bearded wheat, The beardless condition is dominant 

 to the bearded. 



by the omission of a factor. The dominant and recessive 

 white poultry are indistinguishable in appearance. Yet 

 the one contains a factor more and the other a factor less 

 than the coloured bird. 



