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MR. J. T. CUNNINGHAM ON 





occiir, and it is not the object of this paper to draw conclusions 

 as to factors or segregation from the numei-ical proportions. It 

 is assumed that characters united in F^ tend to segregate in F.^, 

 and that the explanation of this segregation is the separation in 

 the gametes of F^ of the pairs of factors, so that half the gametes 



