Adoption lasts for life and once an Adoption Order is made it cannot be revoked; with adoption birth parents lose all their parental responsibility.
Mae mabwysiadu’n para am oes ac unwaith i Orchymyn Mabwysiadu gael ei wneud ni ellir ei ddiddymu; bydd rhieni'n colli eu holl gyfrifoldebau rhianta drwy fabwysiadu.