Complex sentence: This term is normally used in the case where a gene or set of genes is switched on under well defined conditions, for example, the simple repressor switch expression system in Lambda phage and the lac operator system in bacteria.
Split into simpler sentences: This term is normally used in the case where a gene or set of genes is switched on under well defined conditions. For example, the simple repressor switch expression system in Lambda phage and the lac operator system in bacteria.