Abstract
As we now know, there are two basic chromosome numbers for R. >rattus, one 42 (Folio 229) and the other 38. Apparently Robertsonian processes were involved in the establishment of the two karyotypes (3). Data are rapidly accumulating in regard to the distribution of these two basic numbers over the globe.
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References
Bianchi, N.O., Paulette-Vanrell, J. and Rioja, V.: Complement with 38 chromosomes in two South American populations of Rattus rattus. Experientia 25 : 1111, 1969.
Satya Prakash, K.L. and Aswathanarayana, N.V.: A preliminary note on the occurrence of supernumerary (B-) chromosome in the 38-chromosome taxon of Rattus rattus. Mammalian Chromosomes Newsletter 13:117, 1972.
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© 1973 Springer Science+Business Media New York
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Hsu, T.C., Benirschke, K. (1973). Rattus rattus (Black rat). In: An Atlas of Mammalian Chromosomes. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-9826-7_26
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DOI: https://doi.org/10.1007/978-1-4612-9826-7_26
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4684-7992-8
Online ISBN: 978-1-4612-9826-7
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