Some additional results on the maintenance of kappa particles inParamecium aurelia(stock 51) after loss of the geneK

Abstract

Additional data are presented on the maintenance of kappa particles in cells ofP. aurelia(stock 51) after removal of the geneK. It is shown that kappa particles may be maintained for as long as twenty-seven fissions in the absence ofK, or may disappear before eight fissions. Slight retardation in fission rate of paramecia quickly eliminates kappa particles. The bearing of these results on the metagon theory is discussed.