732 THE AMERICAN NATURALIST [Vol.XLIX 



The behavior of black-eyed whites in crosses 1 and 2, 

 Table I indicates that they are always heterozygous domi- 

 nants and that they can not, therefore, be obtained in a 

 condition to "breed true." 



With this in mind it is interesting to calculate the ex- 

 pected ratio when black-eyed whites are crossed inter se. 

 If black-eyed white is due primarily to a dominant factor 



