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Homozygous reciprocal translocation as a mode of speciation inMicrogale thomas 1883 (Tenrecidae-insectivora)

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Résumé

Deux espèces d'insectivores,Microgale dobsoni etM. talazaci, ont le même nombre de chromosomes, 2n=30. Leurs caryotypes respectifs présentent des différences portant sur 2 pairs d'autosomes. Une translocation réciproque, devenue homocygote, permet d'expliquer ces différences. On peut concevoir que la spéciation est alors intervenue à la suite d'effets de position, de la stérilité des hybrides et de la préférence des porteurs de formules chromosomiques différentes pour telle ou telle «niche» écologique.

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Authors and Affiliations

  1. Division of Medical Genetics, Department of Medicine, The Johns Hopkins University School of Medicine, USA

    D. S. Borgaonkar & E. Gould

  2. Laboratory of Comparative Behavior, Department of Mental Hygiene, The Johns Hopkins University School of Hygiene and Public Health, 21 205, Baltimore, Maryland, USA

    D. S. Borgaonkar & E. Gould

Authors
  1. D. S. Borgaonkar
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  2. E. Gould
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Additional information

Part of this work is supported by National Science Foundation Grants Nos. GB 4978 (D.S.B.), GB 4436 (E.G.), U.S. Air Force AFOSR 586-67 (E.G.), American Philosophical Society Penrose Fund Grant No. 4314 (D.S.B.).

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Borgaonkar, D.S., Gould, E. Homozygous reciprocal translocation as a mode of speciation inMicrogale thomas 1883 (Tenrecidae-insectivora). Experientia 24, 506–509 (1968). https://doi.org/10.1007/BF02144421

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