Personal communication from: Jerry Coyne, University of Chicago To: Bloomington Drosophila Stock Center Subject: 7-11HD Dated: 14 May 1998 Information communicated: Gene symbol 7-11HD Full Name 7,11-heptacosadiene modifier Map position between cu and kar Allele symbol 7-11HD1 Phenotype changes the proportion of 7,11- heptacosadiene:5 ,9-heptacosadiene from high to low Origin collected in the Dominican Republic in 1993. The strain carrying this homozygous wild-caught 3rd chromosome, which also carries In(3L)P, is also known as Jaragua 3B.