Page:A critique of the theory of evolution.djvu/91

barred. If these are inbred half of the daughters are black and half are barred; all of the sons are barred. The grandmother has transmitted her color to half of her granddaughters but to none of her grandsons.

Fig. 38, A. Diagram illustrating inheritance of color blindness in man; the iris of the color-blind eye is here black.

Fig. 38, B. Reciprocal of cross in Fig. 38 a.