AN INVESTIGATION OF THE COMPONENTS OF SEGREGATION-DISTORTER SYSTEMS IN DROSOPHILA MELANOGASTER

George L. Gabor Miklos ¹

¹ Botany Department, University of Sydney, Australia and Biology Department, University of California, San Diego

The problems of the Segregation-Distorter system are approached and unified in terms of an orthodox quantitative genetic system. It is shown that the SD system involves positive and negative modifier genes of varying strengths, that there is no major Stabiliser gene, and that the Activator gene is not unique. It is further argued that the SD phenomenon is mainly male limited, with "female effects" being of small magnitude.