title: Molecular cytogenetic analysis of the chicken and red-legged partridge chromosome 4 repatterning.
abstract: Conserved genome homologies between the chicken and partridge have been demonstrated for chromosomes 1 and Z in previous studies. Morphological differences between the chicken and partridge for chromosome 4 have also been identified. The chicken chromosome 4 is submetacentric while the partridge chromosome 4 is acrocentric. We now report that in spite of this morphological difference, both species share extensive homology for chromosome 4 as determined by fluorescent in situ hybridization (FISH). Since only two chromosomes of the partridge karyotype showed FISH signals, our observation suggests that a chromosome rearrangement (peri- or paracentric inversion) has occurred in the partridge chromosome 4.
authors.affiliation: Department of Animal Science, University of Minnesota, St. Paul, USA.
authors.forename: P S
authors.initials: PS
authors.lastname: Ramos
authors.forename: D
authors.initials: D
authors.lastname: Dias
authors.forename: F A
authors.initials: FA
authors.lastname: Ponce de León
mesh_terms: D000818:Animals; D001717:Birds / Q000235:genetics*; D002645:Chickens / Q000235:genetics*; D007446:Chromosome Inversion; D002874:Chromosome Mapping; D017404:In Situ Hybridization, Fluorescence; D007621:Karyotyping; D017385:Sequence Homology