Abstract
The diploid number of the Rhesus macaque, Macaca mulatta, is 42. All chromosomes are biarmed and all constitutive heterochromatins are centromeric. The diploid number of the African Green monkey, Cercopithecus aethiops, is 60. Again all chromosomes are biarmed, but seven pairs possess very short second arms which are heterochromatic. The heterochromatins of remaining chromosomes are centromeric. Using G-banding and deleting the heterochromatic short arms, the chromosomes of the African Green monkey can be artificially fused to reconstruct a karyotype of the Rhesus with only one pair of unmatched small metacentrics. In addition to the Robertsonian type of translocations, several sets of centromere-telomere translocations were found. The latter type of translocation reduced three arms into two. Thus the fundamental number can be changed by two mechanisms: growing extra heterochromatic arms and the centromere-telomere fusions.
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Bobrow, M., Madan, K., Pearson, P. L.: Staining of some specific regions of human chromosomes, particularly the secondary constriction of No. 9. Nature (Lond.) New Biol. 238, 122–124 (1972)
Chiarelli, B.: Chromosome polymorphism in the species of the genus Cercopithecus. Cytologia (Tokyo) 33, 1–16 (1968)
Grouchy, J. de, Turleau, C.: Evolution caryotypiques de l'homme et du chimpanzé. Etude comparative des topographies de bandes après dénaturation ménagée. Ann. Genet. 15, 79–84 (1972)
Hsu, T. C., Arrighi, F. E.: Chromosomal evolution in the genus Peromyscus (Cricetidae, Rodentia). Cytogenetics 5, 355–359 (1966)
Hsu, T. C., Arrighi, F. E.: Chromosomes of Peromyscus (Rodentia, Cricetidae). I. Evolutionary trends in 20 species. Cytogenetics 7, 417–446 (1968)
Hsu, T. C., Baker, R. J., Utakoji, T.: The multiple sex chromosome system of American leaf-nosed bats (Chiroptera, Phyllostomidae). Cytogenetics 7, 27–38 (1968)
Kurnit, D. M., Maio, J. J.: Subnuclear redistribution of DNA species in confluent and growing mammalian cells. Chromosoma (Berl.) 42, 23–36 (1973)
Manfredi-Romanini, A. M.: Quantitative relative determination of the nuclear DNA in the old world primates. (Cited by Chiarelli, 1968)
Pathak, S., Hsu, T. C., Helm, J. D., III: Chromosome homology in the climbing rats, genus Tylomys (Rodentia, Cricetidae). Chromosoma (Berl.) 42, 215–218 (1973)
Seabright, M.: The use of proteolytic enzymes for the mapping of structural rearrangements in the chromosomes of man. Chromosoma (Berl.) 36, 204–210 (1972)
Shaw, M. W., Krooth, R. S.: The chromosomes of the Tasmanian rat-kangaroo (Potorous tridactylus apicalis). Cytogenetics 3, 19–33 (1964)
Shiraishi, Y., Yosida, T. H.: Banding pattern analysis of human chromosomes by use of a urea treatment technique. Chromosoma (Berl.) 37, 75–83 (1972)
Stefos, K., Arrighi, F. E.: Heterochromatic nature of W chromosome in birds. Exp. Cell Res. 68, 228–231 (1971)
Sutton, W. D., McCallum, M.: Related satellite DNA's in the genus Mus. J. molec. Biol. 71, 633–656 (1972)
Wurster, D., Benirschke, K.: Indian muntjac, Muntiacus muntjak: A deer with low diploid chromosome number. Science 168, 1364–1366 (1970)
Yosida, T. H., Sagai, T.: Banding pattern analysis of polymorphic karyotypes in the black rat by a new differential staining technique. Chromosoma (Berl.) 37, 387–394 (1972)
Zech, L., Evans, E. P., Ford, C. E., Gropp, A.: Banding patterns in the mitotic chromosomes of tobacco mouse. Exp. Cell Res. 70, 263–268 (1972)
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Stock, A.D., Hsu, T.C. Evolutionary conservatism in arrangement of genetic material. Chromosoma 43, 211–224 (1973). https://doi.org/10.1007/BF00483380
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DOI: https://doi.org/10.1007/BF00483380