Abstract
A cDNA clone (F-id1) homologous to Drosophila F elements has been isolated from a cDNA library prepared from poly(A)+ RNA derived from imaginal discs. The F-id1 insert is identical to the 3' end terminus of Fw, an element inserted at the white locus upon irradiation. The isolation of F-id1 provides the first evidence that F elements are expressed in the fruit fly life.