Page:A critique of the theory of evolution.djvu/92

In the reciprocal cross (fig. 40) black cock by barred hen, the daughters are black and the sons barred—criss-cross inheritance. These inbred give black hens and black cocks, barred hens and barred cocks.

Fig. 39. Sex-linked inheritance in domesticated birds shown here in a cross between barred Plymouth Rock male and black Langshan female.

There is a case comparable to this found in a wild species of moth, Abraxas grossulariata. A wild variation of this type is lighter in color