A genetic analysis of CRM negative mutants at the td locus ofNeurospora crassa

Abstract
The possibility that primary CRMisolates at the td locus ofNeurospora crassaare multisite lesions has been examined. By comparing the behavior of primary CRMmutants to known multisite CRMmutants in the genetic tests of recombination and reversion, it can be concluded that primary CRMmutants are not multisite. The genetic implications of a CRMand CRM+mutant have been discussed.