Subject: aristaless Hello, I am writing to correct a mistake in the file on the aristaless gene. The supposed al05142 allele is not an allele of aristaless, and is in fact a mutation in the dachsous gene. The P-element insert appears to map a long way from al - close to ds. The lacZ expression pattern of this line is superficially similar to al in the leg disc, but actually very closely resembles that reported for ds. Gerard Campbell Department of Biological Sciences University of Pittsburgh 215A Clapp Hall 4400 Fifth Avenue Pittsburgh, PA 15260