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Somatic recombination in the dikaryon of Coprinus lagopus

Published online by Cambridge University Press:  14 April 2009

J. W. Cowan  and
D. Lewis
J. W. Cowan
Affiliation:
Department of Botany, University College London
D. Lewis
Affiliation:
Department of Botany, University College London
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A technique based upon auxotrophic mutants and recessive suppressor genes has been used to select for somatic recombinants in the dikaryon of Coprinus lagopus. Both haploid and disomic nuclei with a reassortment of chromosomes from the two component nuclei of the dikaryon were found. The presence of the disomics indicates that the recombination process is one of fusion of nuclei with a gradual haploidization by loss of chromosomes at mitotic divisions. An extensive test for crossing-over in the A chromosome failed to give an unambiguous crossover recombinant, but it produced a stock with a normal A chromosome and a fragment of the chromosome.

Type
Research Article
Information
Genetics Research , Volume 7 , Issue 2 , April 1966 , pp. 235 - 244
Copyright
Copyright © Cambridge University Press 1966

References

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