. The Dental cosmos. linked with the factor for etes must bring the factors for hornsin order to have the horns appear. Anice experiment was devised to provethis theory. If from the F2 generationa male individual which has no horns,and which therefore can carry no factorfor horns, be crossed with one of thefemales of the F1 generation, which al-though hornless carries the factor forhorns, it would follow, if the assumptionis correct, that all of the females of thiscross would be hornless, and one-halfof the males would be horned—for thereason that one-half of the males wouldreceive one factor
. The Dental cosmos. linked with the factor for etes must bring the factors for hornsin order to have the horns appear. Anice experiment was devised to provethis theory. If from the F2 generationa male individual which has no horns,and which therefore can carry no factorfor horns, be crossed with one of thefemales of the F1 generation, which al-though hornless carries the factor forhorns, it would follow, if the assumptionis correct, that all of the females of thiscross would be hornless, and one-halfof the males would be horned—for thereason that one-half of the males wouldreceive one factor for horns each suffi-cient to produce horns, and the otherhalf would receive no factor for horns,and consequently would be same would result for the females,and as only one factor could be presentin any individual, the total number ofthe females would be hornless. As theresult of this cross there were 17 malesand 11 females; all the females werehornless, 9 males had horns and 8 werehornless^1) Fig.
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Keywords: ., bookcentury1900, bookdecade1910, bookiddent, booksubjectdentistry
