... and to investigate position effects in plants, is discussed. enhancer detection gene tagging tobacco Nicotiana tabacum The advances that have been made in techniques for the stable transformation of plants have created new opportunities for investigating the regulatory sequences of specific genes...

... number of the regulatory elements detected by enhancer detection control neighbouring genes, we discuss the implications of our results concerning ovarian gene expression patterns in Drosophila . We have also identified a small number of insertion-linked recessive mutants that are sterile or lead...