Summary
Reconstructions of synaptonemal complexes (SC's) from serial sections of Stethophyma grossum spermatocytes demonstrate a clear correlation of chiasma distribution and the extent of pairing among different chromosome pairs. Proximal localisation of chiasmata in the eight longest chromosome pairs is associated with proximally localised incomplete development of the SC in eight bivalents. Up to three bivalents show complete SC development in EM reconstructions which parallels the non-localised chiasma formation shown by the three shortest bivalents at Metaphase I. The unpaired axial cores (AC's) of the incompletely paired bivalents were studied by a technique which revealed the nuclear membrane attachments of most AC's and allowed an assessment of the relative amounts of SC and AC. The extent of the correlation between chiasma localisation and incomplete pairing is examined and discussed.
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Church, K. 1976. Arrangement of chromosome ends and axial core formation during early meiotic prophase in the male grasshopper Brachystola magna by 3D, E.M. reconstruction. Chromosoma (Berl), 58, 365–376.
Darlington, C D. 1931. Meiosis. Biol Rev, 6, 221–264.
Darlington, C D. 1935. The internal mechanics of the chromosomes. II. Prophase pairing at meiosis in Fritillaria. Proc Roy Soc (Land), B, 118, 59–73.
Fletcher, H L. 1978. Localised chiasmata due to partial pairing: a 3D reconstruction of synaptonemal complexes in male Stethophyma grossum. Chromosoma, 65, 247–269.
Franchi, L L, and Mandl, A M. 1962. The ultrastructure of oogonia and oocytes in the foetal and neonatal rat. Proc Roy Soc (Lond), B, 157, 99–114.
Henderson, S A. 1969. Chiasma localisation and incomplete pairing. Chromosomes Today, 2, 56–60 (C. D. Darlington and K. R. Lewis, eds.). Edinburgh, Oliver & Boyd.
Janssens, F A. 1924. La chismatypie dans les insectes. La Cellule, 34, 135–359.
John, B. 1976. Myths and mechanisms of meiosis. Chromosoma (Berl), 54, 295–325.
John, B, and Lewis, K R. 1965. The Meiotic System. Protoplasmatologia VI, Fl. Wien, Springer-Verlag.
Jones, G H. 1973. Light and electron microscope studies of chromosome pairing in relation to chiasma localisation in Stethophyma grossum (Orthoptera: Acrididae). Chromosoma (Berl), 42, 145–162.
Klasterska, I. 1976. A new look at the role of the diffuse stage in problems of plant and animal meiosis. Hereditas (Lund), 82, 193–204.
La Cour, L P, and Wells, B. 1970. Meiotic prophase in anthers of asynaptic wheat. Chromosoma (Berl), 29, 419–427.
McClung, C E. 1927. Synapsis and related phenomena in Mecostethus and Leptysma (Orthoptera). J Morph, 43, 181–265.
Moens, P B. 1968. The structure and function of the synaptinemal complex in Lilium longiflorum sporocytes. Chromosoma (Berl), 23, 418–451.
Moens, P B. 1969. The fine structure of meiotic chromosome polarisation and pairing in Locusta migratoria spermatocytes. Chromosoma (Berl), 28, 1–25.
Moses, M J, and Counce, S J. 1976. Analysis of synaptonemal complex karyotypes in five mammals. J Cell Biol, 70, 131a.
Perry, P E. 1974. Ph.D. Thesis. University of Birmingham.
Perry, P E, and Jones, G H. 1974. Male and female meiosis in grasshoppers. I. Stethophyma grossum. Chromosoma (Berl), 47, 227–236.
Shaw, D D. 1971. The supernumerary segment system of Stethophyma. II. Heterochromatin polymorphism and chiasma variation. Chromosoma (Berl), 34, 19–39.
Sheridan, W F, and Barrnett, R J. 1969. Cytochemical studies on chromosome ultra-structure. J Ultrastruct Res, 27, 216–229.
Wells, B. 1974. A convenient technique for the collection of ultra-thin serial sections. Micron, 5, 79–81.
White, M J D. 1936. Chiasma localisation in Mecostethus grossus L. and Metrioptera brachyptera L. (Orthoptera). Z ZMforsch, 24, 128–135.
Wilson, E B. 1925. The Cell in Development and Heredity, 3rd Edition. Macmillan, New York.
Moens, P B. 1973. Quantitative electron microscopy of chromosome organisation at meiotic prophase. Cold Spring Harbor Symp Quant Biol, 38, 99–107.
Lacour, L F, and Wells, B. 1973. Deformed lateral elements in synaptinemal complexes of Phaedranassa viridiflora. Chromosoma (Berl), 41, 289–296.
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Wallace, B., Jones, G. Incomplete chromosome pairing and its relation to chiasma localisation in Stethophyma grossum spermatocytes. Heredity 40, 385–396 (1978). https://doi.org/10.1038/hdy.1978.45
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DOI: https://doi.org/10.1038/hdy.1978.45
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