Experientia

, Volume 24, Issue 5, pp 506–509 | Cite as

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

  • D. S. Borgaonkar
  • E. Gould
Specialia Genetica

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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Copyright information

© Birkhäuser Verlag 1968

Authors and Affiliations

  • D. S. Borgaonkar
    • 1
    • 2
  • E. Gould
    • 1
    • 2
  1. 1.Division of Medical Genetics, Department of MedicineThe Johns Hopkins University School of MedicineUSA
  2. 2.Laboratory of Comparative Behavior, Department of Mental HygieneThe Johns Hopkins University School of Hygiene and Public HealthBaltimoreUSA

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