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The genetic analysis of the direct and correlated response to selection for chaetae in Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

W. R. Scowcroft
W. R. Scowcroft
Affiliation:
Division of Plant Industry, CSIRO, Canberra, Australia

Summary

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The direct and correlated response to selection of scutellar microchaetae and scutellar bristles has been analysed by determining the contribution of the three major chromosomes, alone and in combination with each other, to the overall response. The results of the analysis confirm a previous finding, based on a formal statistical approach, that response to selection for microchaetae had highly pleiotropic effects on scutellar bristles. In lines selected, each for high and low microchaetae, genetic changes in the 2nd and 3rd chromosomes are pre-eminent and essentially equal. Inter-chromosomal interactions are of relatively minor importance in interpreting the response to selection for microchaetae but assume greater importance with respect to the correlated character. The results are discussed in terms of the genetic correlation between fitness and the character measured.

Type
Research Article
Information
Genetics Research , Volume 22 , Issue 1 , August 1973 , pp. 1 - 7
Copyright
Copyright © Cambridge University Press 1973

References

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