Figure 7

Model for transcriptional regulatory network controlling meiosis and sporulation. Arrows indicate activation and cross bars indicate repression. The colors reflect the different stages of sexual differentiation as in Figure 1. Mei4p controls transcription of its own gene in a positive feedback [14], but no other transcription factors have been identified that trigger the initial induction of mei4. This activation could be achieved at the posttranscriptional level [7]. Refer to the main text for further details on interactions.