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The effect of aneuploidy on meiotic crossing over and segregation in yeast

Published online by Cambridge University Press:  14 April 2009

P. Duck
Affiliation:
Division of Biological Sciences, National Research Council of Canada, Ottawa, CanadaK1A 0R6
A. P. James
Affiliation:
Division of Biological Sciences, National Research Council of Canada, Ottawa, CanadaK1A 0R6
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Summary

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Meiotic chromosome associations in homothallic strains of S. cerevisiae were investigated by analysis of meiotic spore colonies and crossing over in +/+/− trisomics. The segregants of these aneuploids produce phenotypically distinguishable tetrasomic spore colonies. The data indicate that trivalent associations occur with a high frequency in trisomics of chromosome XVII and that the frequency of second division segregation is markedly increased over that found in the normal dipoid.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1976

References

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