Hostname: page-component-5c6d5d7d68-wtssw Total loading time: 0 Render date: 2024-08-20T03:55:58.033Z Has data issue: false hasContentIssue false
  • English
  • Français

XIV.—The Genetical and Mechanical Properties of the Sex Chromosome. VI. Hexacentrus mundus

Published online by Cambridge University Press:  15 September 2014

P. C. Koller
P. C. Koller
Affiliation:
Institute of Animal Genetics, University of Edinburgh
Get access

Extract

Cytological studies carried out by McClung (1905, 1914) on various species of Orthoptera have shown that the male is the heterogametic sex. The male has only one X-chromosome, whereas the female has two. During spermatogenesis two kinds of gametes are produced, one with the X-chromosome and the other without it. It was also found that the segregation of the single sex chromosome takes place at first meiotic anaphase. The present paper describes the sex chromosome of the male Hexacentrus mundus Walker, from India. During the meiotic division this chromosome exhibits peculiarities which it is believed have not hitherto been seen in any species of the Orthopteræ.

Type
Proceedings
Information
Proceedings of the Royal Society of Edinburgh , Volume 60 , Issue 2 , 1940 , pp. 174 - 181
Copyright
Copyright © Royal Society of Edinburgh 1940

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References to Literature

Asana, J. J., Makino, S., and Niiyama, H., 1938. “A Chromosomal Survey of some Indian Insects. I. Morphology of the Chromosomes in Eight Species of the Locustidæ,” Journ. Fac. Sci. Hokkaido Imp. Univ., ser. vi, Zoology, vol. vi, pp. 211–234.Google Scholar
Asana, J. J., Makino, S., and Niiyama, H., 1939. “A Chromosomal Survey of some Indian Insects. II. A Comparative Study of the Chromosomes in Six Species of Acrididæ,” Jap. Journ. Genet., vol. xv, pp. 251–260.Google Scholar
Caspersson, T., 1939. “On the Rôle of the Nucleic Acids in the Cell,” Proc. 7th Int. Congr. Genet. (in press).Google Scholar
McClung, C. E., 1905. “The Chromosome Complex of Orthopteran Spermatocytes,” Biol. Bull., vol. ix, pp. 304–340.CrossRefGoogle Scholar
McClung, C. E., 1914. “A Comparative Study of the Chromosomes in Orthopteran spermatogenesis,” Journ. Morph., vol. xxv, pp. 651–749.CrossRefGoogle Scholar
Makino, S., 1939. “On the Tetraploid Spermatocytes produced by Irradiation in Podisma mikado (Acrididæ),” Jap. Journ. Genet., vol. xv, pp. 80–82.Google Scholar
Mohr, O. L., 1916. “Studien über die Chromatinreifung der männlicher Geschlechtszellen bei Locusta viridissima,” Arch. Biol. Paris, vol. xxix, PP. 579–752.Google Scholar
White, M. J. D., 1933. “Tetraploid Spermatocytes in a Locust (Schistocerca gregaria),” Cytologia, vol. v, pp. 135–139.CrossRefGoogle Scholar
White, M. J. D., 1935. “The Effects of X-rays on Mitosis in the Spermatogonial Divisions of Locusta migratoria L.,” Proc. Roy. Soc., B, no. 812, vol. cxix, pp. 61–84.Google Scholar
White, M. J. D., 1936. “Chiasma Localisation in Mecostethus grossus L. and Metrioptera brachyptera L. (Orthoptera),” Zeits. Zellf. mikr. Anat., vol. xxiv, pp. 128–135.CrossRefGoogle Scholar
White, M. J. D., 1938. “A New and Anomalous Type of Meiosis in a Mantid, Callimantis antillarum Saussure,” Proc. Roy. Soc., B., no. 841, vol. cxxv, pp. 516–523.Google Scholar
Wilson, E. B., 1932. “Polyploidy and Metaphase Patterns,” Journ. Morph., vol. liii, pp. 443–471.CrossRefGoogle Scholar