Subject: ADRC: 032 Dear Juan, I am writing in connection with your abstract for the upcoming Washington DC ADRC: 'chico, a Drosophila homologue of mammalian insulin receptor substrate (IRS) genes, is required cell-autonomously for cell size.' You mention a gene that is new to FlyBase, chico. Do you have a map location for chico? It is nice if we can keep as many gene records as possible anchored to the map. Also, do you have allele designations for the mutants described in the abstract? Thank you for your help, with best wishes, Rachel. Subject: Re: ADRC: 032 Hi Rachel: Indeed, chico is a new gene. I think the abbreviation will be chic, since any other combination is already taken. It maps to 31B, next to bsk. Also, we are calling the first allele we identified as chic 1, and it is a P element insertion; the other allele is a deficiency and already has a name. I hope all of this information helps. Sincerely: Dr. Juan R. Riesgo-Escovar