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The genetics of the Xasta mutant of Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

C. M. Hetherington ,
W. J. Whittington ,
M. A. Hossain  and
W. E. Peat
C. M. Hetherington
Affiliation:
Institute of Animal Genetics, University of Edinburgh and University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leicestershire
W. J. Whittington
Affiliation:
Institute of Animal Genetics, University of Edinburgh and University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leicestershire
M. A. Hossain
Affiliation:
Institute of Animal Genetics, University of Edinburgh and University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leicestershire
W. E. Peat
Affiliation:
Institute of Animal Genetics, University of Edinburgh and University of Nottingham School of Agriculture, Sutton Bonington, Loughborough, Leicestershire
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Xasta flies appear to segregate five types of gametes in unequal numbers, namely two which contain both or neither of the chromosomes affected by the translocation and inversions, two further classes which contain one affected and one unaffected chromosome, and finally the remainder which have an unbalanced chromosomal content. These conditions are necessary to fit the results observed in crosses involving the Xasta stock. Xasta exhibits balanced polymorphism under crowded conditions and this may be due to the production of toxic substances by Xa larvae which delay the development of wild type-larvae.

Type
Research Article
Information
Genetics Research , Volume 12 , Issue 3 , December 1968 , pp. 285 - 294
Copyright
Copyright © Cambridge University Press 1968

References

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