Page:A critique of the theory of evolution.djvu/78

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(fig. 28 to right) only one of which is like the male. Here the analysis of the breeding data shows the possibility of explaining this case as due to two pairs Mendelian factors which give in combination the three types of female.

Fig. 28. Papilio polytes, with three types of female to right and one type of male above to left.

Taking these cases together, they furnish a much simpler explanation than the one proposed by Darwin. They show also that characters like these shown by wild species may follow Mendel's law.