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High levels of fitness modifiers induced by hybrid dysgenesis in Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

Benjamin J. Fitzpatrick  and
John A. Sved
Benjamin J. Fitzpatrick
Affiliation:
School of Biological Sciences, Sydney UniversityN.S.W. 2006, Australia
John A. Sved
Affiliation:
School of Biological Sciences, Sydney UniversityN.S.W. 2006, Australia
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Wild-type chromosomes of D. melanogaster mutagenized by passage through a single generation of hybrid dysgenesis have been compared against identical chromosomes passed through a reciprocal, non-dysgenic cross. Fitness of the chromosome in homozygous condition has been examined in population cages using the technique of balancer chromosome equilibration. The results indicate that amongst chromosomes with no lethal or visible mutation, more than 50% have suffered a measurable decline in fitness. The magnitude of this decline is estimated to be in the range 10–20%.

Type
Research Article
Information
Genetics Research , Volume 48 , Issue 2 , October 1986 , pp. 89 - 94
Copyright
Copyright © Cambridge University Press 1986

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