Chromosome Research

, Volume 3, Issue 2, pp 135–137 | Cite as

Whole-arm reciprocal translocation (WART) between Robertsonian chromosomes: finding of a Robertsonian heterozygous mouse with karyotype derived through WARTs

  • Ernesto Capanna
  • Carlo Alberto Redi
Short Communications


The karyotype of a mouse trapped in a hybrid zone between a Robertsonian (Rb) population (2n=22) and a population with the standard karyotype (2n=40-all-telocentrics) shows two Rb chromosomes with new arm compositions. We suggest that whole-arm reciprocal translocations between Rb chromosomes gave rise to the new chromosome constitution and that such events can greatly help in understanding house mouse karyotype diversification and chromosomal speciation.

Key words

mouse reciprocal translocation Robertsonian chromosome speciation 


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Copyright information

© Rapid Communications of Oxford Ltd 1995

Authors and Affiliations

  • Ernesto Capanna
    • 1
  • Carlo Alberto Redi
    • 2
  1. 1.the Dipartimento di Biologia Animale e dell'UomoUniversità di Roma ‘La Sapienza’RomeItaly
  2. 2.the Dipartimento di Biologia Animale e Centro di Studio per l'Istochimica del CNRPaviaItaly

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