The Jaffa are the incubators for the Goa'uld. As the symbiote matures it would take the life of the Jaffa. So they take a new host. The Jaffa get a new symbiote to prolong thier life.
This keeps the Jaffa as warriors and the Goa'uld as ( gods ).
This is what separates the Jaffa and the Goa'uld.
The Jaffa keep their control of thier body, as the symbiote are young.
The Goa'uld are in control of the host body. Eyes glow when focused.
Some Execptions
Symbiote share the body one at a time (Tokra)
Alot of damage to the body
Technology can separate the symbiote control
The host has a stronger will than the symbiote ( No known cases )
Just a heads up
Symbiotes have Queens that pass all knowledge to all thier offspring.
