What event could disrupt one or more body systems?

An event that could disrupt one or more body systems is a HEAD TRAUMA. When we say head trauma, this is an injury which affects the scalp, the skull or even the brain. When the brain is greatly affected, all of the other systems in the body would not function well since it is the brain is the center of the coordination of the systems. Hope this answer helps.

The answer would be dogs.

The offspring will be blood type aa, bb, ab and oo or i