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that differ from each other markedly in color patterns (fig. 43). When any two individuals of these races are crossed they give, as Nabours has shown, in F2 a Mendelian ratio of 1: 2: 1. It is obvious, therefore, that there are here at least nine characters, any two of which behave as a Mendelian pair.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Critique_of_the_Theory_of_Evolution_Fig_043.jpg/232px-Critique_of_the_Theory_of_Evolution_Fig_043.jpg)
These races have