Comparison of Chromosome Karyotype Between Guinea Fowl and Chicken

The chromosome karyotype of guinea fowl and chicken was analyzed and compared to probe the cytogenetics characteristics of guinea fowl chromosome.The results showed that: 1)The sex chromosomes of male guinea fowl and chicken were homozygote(ZZ),the relative length of Z chromosome with metacentric was(9.31±0.50)%~(9.84±0.85)% and between No.4 and No.5 chromosome.The sex chromosomes of female guinea fowl and chicken were heterozygote(ZW) and the size and type of Z chromosome was the same as male guinea fowl and chicken.The relative length of W chromosome with metacentric of female guinea fowl was(4.19±0.23)% and between No.7 and No.8 chromosome.The relative length of W chromosome with metacentric of female chicken was(4.12±0.23)% and between No.8 and No.9 chromosome;2) There was no significant difference in the relative length of the first ten pairs of chromosomes between guinea fowl and chicken but there was some difference in chromosome morphology of No.2 and No.5 chromosome.No.2 and No.5 chromosome of chicken and guinea fowl was metacentric and telocentric,and submetacentric and metacentric respectively.The centromere site of other chromosomes of guinea fowl and chicken was the same.In conclusion: There is some difference in chromosome karyotype between guinea fowl and chicken.