Skip to main content
SpringerLink
Log in

Presumptive X Monosomy in Black Rats from Malaya

  • Letter
  • Published:

From Nature

View current issue Submit your manuscript

Abstract

DURING a cytogenetic study of the Malayan species of Rattus Fischer, black rats, Rattus rattus diardii (Jentink), were trapped at Kuala Lumpur, Selangor, and Batu Pahat, Johore, between November 1968 and July 1970. Ninety animals were examined cytologically and seventeen gave chromosome counts that differed from the normal diploid number of 42 (ref. 1). Fourteen had between one and three additional small metacentric chromosomes which were not distinguished from normal members of the complement. Nevertheless, they are assumed to be equivalent to the “inert” supernumerary (or B) chromosomes of many invertebrate and plant species. Counts of 41 chromosomes were recorded repeatedly in preparations from four of the rats trapped at Kuala Lumpur. Karyotype analysis indicated that “Robertsonian fusion” between two acrocentric chromosomes had occurred in a male specimen2. In the remaining three specimens (all females) an acrocentric chromosome was absent. Observations were made on preparations from bone marrow.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Yong, H. S., Third Oxford Chromosome Conference (1970).

    Google Scholar 

  2. Yong, H. S., Experientia, 27, 467 (1971).

    Article  CAS  Google Scholar 

  3. Yong, H. S., Chromosoma, 27, 245 (1969).

    Article  Google Scholar 

  4. Cattanach, B. M., Genet. Res. Camb., 3, 487 (1962).

    Article  Google Scholar 

  5. Al-Aish, M. S., de la Cruz, F., Goldsmith, L. A., Volpe, J., Mella, G., and Robinson, J. C., New Engl. J. Med., 277, 777 (1967).

    Article  CAS  Google Scholar 

  6. Hayman, D. L., and Martin, P. G., Genetics, 52, 1201 (1965).

    CAS  PubMed  PubMed Central  Google Scholar 

  7. Hayman, D. L., Martin, P. G., and Waller, P. F., Chromosoma, 27, 371 (1969).

    Article  CAS  Google Scholar 

  8. Bianchi, N. O., and Contreras, J. R., Cytogenetics, 6, 306 (1967).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Division of Genetics, School of Biological Sciences, University of Malaya, Kuala Lumpur

    YONG HOI-SEN

Authors
  1. YONG HOI-SEN
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

HOI-SEN, Y. Presumptive X Monosomy in Black Rats from Malaya. Nature 232, 484–485 (1971). https://doi.org/10.1038/232484a0

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1038/232484a0

  • Springer Nature Limited

This article is cited by

Search

Navigation