Complex sentence: Biotechnological approaches based on genetically modified organism (transgenic organisms), still under development, are promising; however since no legal framework exists to authorize the release of such organisms in the nature Knols BG and Louis C.2005.
Split into simpler sentences: Biotechnological approaches based on genetically modified organism (transgenic organisms) are still under development. However, since no legal framework exists to authorize the release of such organisms in the nature Knols BG and Louis C.2005.