title: Synaptonemal complex analysis of chromosome rearrangements in domestic fowl, Gallus domesticus.
abstract: Electron microscopy of synaptonemal complexes in heterokaryotypic Gallus domesticus cockerels revealed that chromosome rearrangements that had been classified by light microscopy as single breaks were in fact reciprocal translocations. A microchromosome provided the centromere for the acentric long arm of chromosome 1 in a rearrangement that had been classified as a centric fission, and microchromosomes were involved in several other rearrangements. The translocation points were mapped in three of the rearrangements.
mesh_terms: D000818:Animals; D002503:Centromere / Q000648:ultrastructure; D002645:Chickens / Q000235:genetics*; D002875:Chromosomes / Q000648:ultrastructure*; D008297:Male; D008854:Microscopy, Electron; D013090:Spermatocytes / Q000648:ultrastructure; D014178:Translocation, Genetic