Construct: Contained within 10.3kb SalI fragment which includes the gt transcription unit. The 3' limit is as for gtBgSal6.5, but the 5' limit is 4.1kb further 5' than for gtBgSal6.5.
Fails to rescue gtX11 embryos to viability, although their abdominal phenotype is restored to wild type. Head defects are only partly ameliorated.