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Journal of Molecular Evolution

, Volume 6, Issue 1, pp 39–50 | Cite as

Nature genetic basis and evolution of the haemoglobin polymorphism inChironomus

  • H. Tichy
Article

Summary

Chironomus larvae exhibit considerable haemoglobin polymorphism.Chironomus tnetans has 10 andC.pallidivittatus has 8 electrophoretically different Hb-chains. With the exception of one Hb-chain, all are species-specific. The hybrid which is fertile, shows the Hb-pattern of both parents. In the F2 and subsequent generations, considerable chromosome rearrangements occurs. Since the chromosomes of the parent species can be distinguished in the polytene state, Hb-patterns can be correlated with specific chromosomal constitutions. All the species-specific Hbgenes are located on one chromosome. This finding suggests that the Hbgenes have evolved through multiple gene duplications. Different mechanisms for gene duplication are discussed.

Key words

Haemoglobin Polymorphism Giant Chromosomes Gene Duplication Diptera 

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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • H. Tichy
    • 1
  1. 1.Max-Planck-Institut für Biologie, Abt. BeermannTübingenGermany

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