Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-05T13:55:21.603Z Has data issue: false hasContentIssue false
  • English
  • Français

Position and orientation in the metaphase equator of an interchange quadrivalent of Allium triquetrum

Published online by Cambridge University Press:  14 April 2009

Geoffrey K. Rickards
Geoffrey K. Rickards
Affiliation:
Botany Department, Victoria University of Wellington, Private Bag, Wellington, New Zealand
Rights & Permissions [Opens in a new window]

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The position and orientation of an interchange quadrivalent in flattened, lateral views of metaphase I were studied in pollen-mother-cells of an interchange heterozygote of Allium triquetrum. The quadrivalent is most often located in marginal rather than central positions in the equator. Moreover, when positioned marginally the quadrivalent is more often than expected found in adjacent orientation, whilst when positioned centrally it is more often than expected found in alternate orientation. Consequently, the frequency of alternate (genetically balanced) orientation in the quadrivalent varies sharply according to whether data are obtained from more marginal or more central positions in the metaphase plate.

Type
Research Article
Information
Genetics Research , Volume 43 , Issue 2 , April 1984 , pp. 139 - 148
Copyright
Copyright © Cambridge University Press 1984

References

REFERENCES

Ashley, T. & Pocock, N. (1981). A proposed model of chromosomal organization in nuclei at fertilization. Genetika 55, 161–169.Google Scholar
Avivi, L. & Feldman, M. (1980). Arrangement of chromosomes in the interphase nucleus of plants. Human Genetics 55, 281–295.Google Scholar
Bennett, M. D. (1982). Nucleotypic basis of the spatial ordering of chromosomes in eukaryotes and the implications of the order for genome evolution and phenotypic variation. In Genome Evolution (ed. Dover, G. A. and Flavell, R. B.). London, New York: Academic Press.Google Scholar
Comings, D. E. (1968). The rationale for an ordered arrangement of chromatin in the interphase nucleus. American Journal of Human Genetics 20, 440–460.Google Scholar
Comings, D. E. (1980). Arrangement of chromatin in the nucleus. Human Genetics 33, 131–144.Google Scholar
Costello, D. P. (1970). Identical linear order of chromosomes in both gametes of the Acoel turbellarian Polychoerus carmelensis: a preliminary note. Proceedings National Academy Science (U.S.A.) 67, 1951–1958.Google Scholar
Ford, J. H. & Wilson, L. S. (1972). Spatial organization of nuclear components and the relevance to cell division. Cytobios 5, 35–42.Google Scholar
Juricek, D. K. (1975). Non-random chromosome distribution in radial metaphases from chinese hamster. Part 1. Uncultured cells. Chromosoma (Berl.) 50, 313–326.CrossRefGoogle Scholar
Kempanna, C. & Riley, R. (1964). Secondary association between genetically equivalent bivalents. Heredity 19, 289–299.CrossRefGoogle Scholar
Maguire, M. P. (1983). Chromosome behavior at premeiotic mitosis in maize. Journal of Heredity 74, 93–96.CrossRefGoogle Scholar
Rickards, G. K. (1964). Some theoretical aspects of selective segregation in interchange complexes. Chromosoma (Berl.) 15, 140–155.CrossRefGoogle Scholar
Rickards, G. K. (1977). Prometaphase I and anaphase I in an interchange heterozygote of Allium triquetrum (Liliaceae). Chromosoma (Berl.) 64, 1–23.CrossRefGoogle Scholar
Rickards, G. K. (1983). Orientation behavior of chromosome multiples of interchange (reciprocal translocation) heterozygotes. Annual Review of Genetics 17, 443–498.CrossRefGoogle ScholarPubMed
Schrader, F. (1953). Mitosis. Columbia University Press, New York.Google Scholar
Snow, R. (1963). Alcoholic HCl-carmine as a stain of chromosomes in squash preparations. Stain Technology 38, 9–13.CrossRefGoogle ScholarPubMed
Swanson, C. P. (1960). Cytology and Cytogenetics. London: Macmillan.Google Scholar