Subject: Re: hono We have been unable to confirm the existence of a P element at the site upstream of the tyramine receptor reported to cause the mutant hono (Kutsukake et al., 2000, Gene 245(1): 31--42), in spite of receiving three independent batches of hono flies. We can PCR amplify across the supposed insertion site using genomic DNA isolated from individual flies from the hono stocks, indicating no P element at that site. We have communicated our concerns to the publishing authors. Thanks Jay Jay Hirsh and James Burnette, University of Virginia.