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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
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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

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References

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