“…The observations thus illustrate that HAS, in contrast to HA, is a potential chromosome breaking agent in Drosophila test system. PARKASH and MIGLANI (1976) reported cytological effects of alkylating agents-methylmethane sulphonate (MMS) and diphenethanol (DPA) which indicate interesting relationships with the present observations. Two types of inversions (Hs=MHJ and H11=MHs) induced with HAS and MH are similar to those observed with MMS.…”