Abstract
Relative positions of homologous heterochromatic regions of maize chromosomes were studied at premeiotic interphase, at tapetal mitotic interphase and at root tip mitotic interphase. In all three kinds of cell homologues were found to be situated significantly nearer to each other than to heterologues. It is concluded that some degree of homologous chromosome pairing may occur widely at anaphase or telophase (where it is easily overlooked) and that therefore, as has been previously suggested, homologues may be loosely aligned throughout premeiotic interphase in preparation for their subsequent synapsis.
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References
Boss, J.: Mitosis in culture of newt tissues II. Chromosome pairing in anaphase. Exp. Cell Res. 7, 225–231 (1954); - The pairing of somatic chromosomes: A survey. Tex. Rep. Biol. Med. 13, 213–221 (1955).
Digby, L.: The somatic, premeiotic and meiotic nuclear divisions of Galtonia candicans. Ann. Bot. 24, 727–758 (1910).
Donnelly, G. M., and A. H. Sparrow: Mitotic and meiotic chromosomes of Amphiuma. J. Hered. 56, 90–98 (1965).
Evans, H. J., and T. R. L. Bigger: Chromatid aberrations induced by gamma irradiation II. Non-randomness in the distribution of chromatid abberations in relation to chromosome length in Vicia faba root-tip cells. Genetics 46, 277–289 (1961).
Feldman, M.: The effect of chromosomes 5B, 5D and 5A on chromosomal pairing in Triticum aestivum. Proc. nat. Acad. Sci. (Wash.) 55, 1447–1453 (1966).
—, T. Mello-Sampayo, and E. R. Sears: Somatic association in Triticum aestivum. Proc. nat. Acad. Sci. (Wash.) 56, 1192–1199 (1966).
Kitani, Y.: Orientation, arrangement and association of somatic chromosomes. Jap. J. Genet. 38, 244–256 (1963).
Maguire, M. P.: A study of homology between a terminal portion of Zea chromosome 2 and a segment derived from Tripsacum. Genetics 45, 195–209 (1960); - The relationship of crossover frequency to synaptic extent at pachytene in maize. Genetics 51, 23–40 (1965).
Mitra, J., and F. C. Steward: Growth induction in cultures of Haplopappus gracilis II. The behaviour of the nucleus. Amer. J. Bot. 48, 358–368 (1961).
Moens, P. B.: A new interpretation of meiotic prophase in Lycopersicum esculentum (tomato). Chromosoma (Berl.) 15, 231–242 (1964); - The time of chromosome pairing at meiosis. Genetics 54, 349 (1966).
Rhoades, M. M.: The cytogenetics of maize, pp. 123–129. In: Corn and corn improvement. Edit, by G. F. Sprague. New York: Academic Press 1955; - Meiosis, pp. 1–75. In: The cell III. Edit, by J. Brachet and A. E. Mirsky. New York: Academic Press 1961.
Ris, H., and A. E. Mirsky: The state of the chromosomes in the interphase nucleus. J. gen. Physiol. 32, 489–502 (1949).
Schneiderman, L. J., and C. A. G. Smith: Non-random distribution of certain homologous pairs of normal human chromosomes in metaphase. Nature (Lond.) 195, 1229–1230 (1962).
Sonnenblick, B. P.: The early embryology of Drosophila melanogaster, pp. 62–167. In: The biology of Drosophila. Edit, by M, Demerec. London: Wiley 1950.
Smith, S. G.: Polarization and progression in pairing. II. Premeiotic orientation and the initiation of pairing. Canad. J. Res. 20, 221–229 (1942).
Westergaard, M.: Studies on the mechanism of crossing over. I. Theoretical considerations. C. R. Trav. Lab. Carlsberg 34, 359–405 (1964).
Wilson, E. B.: Studies on chromosomes. VIII. Observation on the maturation-phenomena in certain Hemiptera and other forms, with considerations on synapsis and reduction. J. exp. Zool. 13, 345–450 (1912).
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Maguire, M.P. Evidence for homologous pairing of chromosomes prior to meiotic prophase in maize. Chromosoma 21, 221–231 (1967). https://doi.org/10.1007/BF00329547
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DOI: https://doi.org/10.1007/BF00329547