SEGREGATION OF TWO ALLELES FOR COLOR OF DOWN IN PARTHENOGENETIC AND NORMAL TURKEY EMBRYOS AND POULTS

[摘要] Data were collected on the down color of 1,386 parthenogenetic embryos and poults from eggs of 306 young virgin and older nonmated bronze turkey hens. Each hen involved was heterozygous ( Cc ) for alleles which affect feather pigmentation. Six hundred and sixty nine white and 717 colored parthenogenetic embryos and poults were observed, a 1:1 ratio. Subsequently, 89 of these 306 heterozygous bronze hens were inseminated with semen from BSW ( cc ) males and down color of embryos and poults from fertilized eggs recorded. the 89 females produced a total of 233 white and 239 colored normal embryos and poults. The 1:1 ratio for down color among both parthenogenetic and normal embryos and poults shows that, in both instances, the two alleles at a locus on an autosome segregated equally. Four possible cytological routes which would lead to diploidy were discussed.

[学科分类] 医学（综合）