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Homologous bands on the long arms of the X and Y chromosomes of Anopheles atroparvus

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Abstract

The long arms of the X and Y chromosomes of the mosquito Anopheles atroparvus (2n = 6) are equal in length, synchronous in their late DNA replication and have homologous G and Q bands. This indicates that differentiation of the two sex chromosomes was the consequence of a single event such as a single deletion of an autosome to give the Y chromosome, not followed by the acquisition of differential heterochromatic blocks.

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Authors and Affiliations

  1. Institute of General Biology of the Medical Faculty, University of Pavia, Italy

    L. Tiepolo, M. Fraccaro, U. Laudani & G. Diaz

  2. Institute of Genetics, University of Cagliari, Italy

    L. Tiepolo, M. Fraccaro, U. Laudani & G. Diaz

  3. Gruppo Euratom, Via Forlanini, 14, 27100, Pavia, Italy

    L. Tiepolo & M. Fraccaro

Authors
  1. L. Tiepolo
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  2. M. Fraccaro
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  3. U. Laudani
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  4. G. Diaz
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Tiepolo, L., Fraccaro, M., Laudani, U. et al. Homologous bands on the long arms of the X and Y chromosomes of Anopheles atroparvus . Chromosoma 49, 371–374 (1975). https://doi.org/10.1007/BF00285129

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  • DOI: https://doi.org/10.1007/BF00285129

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