![](https://www.endotext.org/wp-content/uploads/2013/02/Fig4-Schematic-representation-of-molecular-mechanisms-in-male-female-sex-determination.jpg)
FIGURE 4. Schematic representation of molecular mechanisms involved in determining the fate of the undifferentiated gonadal ridge.
Black arrows indicate a positive regulation; double arrows indicate a positive feedback loop; red lines indicate a negative regulation; double red lines indicate a mutual antagonism.