Abstract
Supernumerary chromosomes have been observed in a few individuals of three subspecies of Rattus rattus from India and Nepal. The supernumerary chromosomes are late replicating and positively heteropycnotic during meiosis which characterize their heterochromatic nature. Their G-banding patterns do not exactly resemble the patterns exhibited by the chromosomes of similar size and morphology of the normal complement. The supernumerary chromosomes become conspicuous for the lack of a centromeric C-band in them as compared to the prominent C-bands in other chromosomes of the complement.
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References
Darlington, C. D.: Cytology. London: J. & A. Churchill Ltd. 1965
Ellerman, J. R.: Rodentia, Pt. II. Fauna of India-Mammalia 3 p. 483–873. Delhi: Publication Division 1961
Gallagher, A., Hewitt, G., Gibson, I.: Differential Giemsa staining of heterochromatic B-chromosome in Myrmeleotettix maculatus (Thunb.) (Orthoptera-Acrididae). Chromosoma (Berl.) 40, 167–172 (1973)
Gropp, A., Marshall, J., Flatz, G., Olbrich, M., Manyanondha, K., Santadusit, A.: Chrmosomenpolymorphismus durch überzählige Autosomen. Beobachtungen an der Hausratte (Battus rattus). Z. Säugetierkde 35, 363–371 (1970)
John, B., Lewis, K. R.: The chromosome complement. Protoplasmatologia VI/1/A, p. 1–206. Wien-New York: Springer 1968
Lindsley, D. L., Novitski, E.: Localization of the genetic factors responsible for the kinetic activity of X chromosomes of Drosophila melanogaster. Genetics 43, 790–798 (1958)
Ray-Chaudhuri, S. P., Sharma, T., Pathak, S.: Karyotype variation in R. r. brunneusculus (Hodgson) (Muridae-Rodentia). Abstract. 3rd Cell Biol. Conf., p. 23, Delhi 1969
Schnedl, W.: Analysis of human karyotype using a reassociation technique. Chromosoma (Berl.) 34, 448–454 (1971)
Sharma, T., Garg, G. S.: C-band in only a few chromosomes of a primate, Presbytis entellus entellus (Dufresne). Abstract. 9th Inter. Congr. anthropol. ethnol. Sciences, Chicago, Suppl. 2, p. 27, 1973
Sharma, T., Raman, R.: Inter- and intra-subspecific variation in chromosome complement of Rattus rattus (Linnaeus) from India and Nepal. Abstract. 4th Cell Biol. Conf., Delhi 1971
Sharma, T., Raman, R.: Variation of constitutive heterochromatin in the sex chromosomes of the rodent Bandicota bengalensis bengalensis (Gray). Chromosoma (Berl.) 41, 75–84 (1973)
Sinha, A. K., Kakati, S., Pathak, S.: Exclusive localization of C-bands within opossum sex chromosomes. Exp. Cell Bes. 75, 265–268 (1972)
Stefos, K., Arrighi, F. E.: Heterochromatic nature of W chromosome in birds. Exp. Cell Res. 68, 228–231 (1971)
Unakul, W., Hsu, T. C.: The C- and G-banding patterns of Rattus norvegicus chromosomes. J. nat. Cancer Inst. 49, 1425–1431 (1972)
Wahrman, J., Gourevitz, P.: The chromosome biology of the 2n = 38 black rat, Rattus rattus. Abstract. Jerusalem Chromosome Conference, p. 19–20, Jerusalem 1972
Walker, P. M. B.: Origin of satellite DNA. Nature (Lond.) 229, 306–308 (1971)
Yong, H. S., Dhaliwal, S. S.: Supernumerary (B-) chromosomes in the Malayan house rat, Rattus rattus diardii (Rodentia, Muridae). Chromosoma (Berl.) 36, 256–262 (1972)
Yosida, T. H., Sagai, T.: Banding pattern analysis of polymorphic karyotypes in the black rats by a new differential staining technique. Chromosoma (Berl.) 37, 387–394 (1972)
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Raman, R., Sharma, T. DNA replication, G- and C-bands and meiotic behaviour of supernumerary chromosomes of Rattus rattus (Linn.). Chromosoma 45, 111–119 (1974). https://doi.org/10.1007/BF00283834
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DOI: https://doi.org/10.1007/BF00283834