254 Colour and Pattern-Transference in, Pheasants 



Life History of Series 1 Fertile Hybrids. 

 Silver ? " B " x Swinhoe ^ " A" 



F, ? F, ^ ■' BBBA " inter se. 



In the scheme of mating tor Series 1 in pedigree Fertile Hi/brids 

 a cross was made between a Silver female and a Swinhoe male and 

 continued between the Silver female and F^ male, antl again between 

 the Silver female and F., male, F-j being mated inter se to produce F^ 

 (page 248). An account of the female offspring of this series has 

 already been published', in which it was shown that in .spite of the 

 three doses of Silver to one of Swinhoe, the females remained, to 

 a certain extent, hybrid in all four generations, and that pattern and 

 colour-transference produced mutations amongst them which proved 

 heritable and were governed by Mendel's law. The males in this series 

 also exhibit mutations to a marked degree, and as was the case with the 

 females, these have been ascertained in most instances to arise from 

 pattern and colour-transferences from one area to another, some originating 

 from both sexes of the male parent species, others from changes occurring 

 in characters derived from the male of the female parent species, and 

 these mutations also proved heritable, and gave evidence of Mendelian 

 segregation. 



It is a curious fact that the adult leg-colour of both males and 

 females of these four generations of Series 1, was the leg-colour of the 

 males of the female parent species. The Silver hen did not, even after 

 three crosses, transmit the colour of her own legs, scarlet, to her female 

 offspring, but transmitted to them the leg-colour of the male of her 

 species. 



' Journal of Genetics, Vol. in. April, 1914, "Tlie Transmission of Secnn.lary Characters 

 in Pheasants," Rose Haig TLomas. 



