Heredity and sex . rred Plymouth Rock cock, all the offspring willbe barred (Fig. 40). If these are inbred, there are pro-duced barred females and males, and black numerical proportion is 50 per cent barred males, 25per cent barred females, and 25 per cent black females. The black hen has transmitted her character to halfof her granddaughters and to none of her resemblance to the case of the red-eyed, white-eyed flies is obvious, but here black appears as a sex-linked character in the females. The converse cross is also suggestive. When abarred hen is mated to a black
Heredity and sex . rred Plymouth Rock cock, all the offspring willbe barred (Fig. 40). If these are inbred, there are pro-duced barred females and males, and black numerical proportion is 50 per cent barred males, 25per cent barred females, and 25 per cent black females. The black hen has transmitted her character to halfof her granddaughters and to none of her resemblance to the case of the red-eyed, white-eyed flies is obvious, but here black appears as a sex-linked character in the females. The converse cross is also suggestive. When abarred hen is mated to a black cock, all the daughtersare black and all the sons are barred (Fig. 41). Whenthese are inbred, there are produced black males andfemales and barred males and females in equal num- 70 HEREDITY AND SEX bers. Again, the resemblance of the reciprocal crossto one of the combinations for eye color is fact, this case can be explained on the same prin-ciple as that used for the flies, except that in birds it is.
Size: 1347px × 1855px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectsex, bookyear1913
