Genital ridge develops from
Intermediate mesoderm forms the urogenital ridge which forms testes,ovary and kidney Paraxial mesoderm differentiate into somites and form skeletal muscles and veebral bodies. Lateral plate mesoderm-small spaces appear in it and later they form intraembryonic coelom.
Paraxial mesoderm
Lateral plate mesoderm
Intermediate mesoderm
None
Development of GU system and Neuro-vascular supply of pelvis & perineum