Final answer:
An organizational structure based on family relationships is not typically a part of effective family governance, which more professionally uses nonfamily managers, a board of directors, and defined rules for family members' employment.
Step-by-step explanation:
The feature that is not typically part of a system of effective family governance is b. An organizational structure based on family relationships. Effective family governance should ensure that the family's involvement in the business is structured professionally, and not solely based on relationships. Family governance systems often include nonfamily managers, a board of directors, and rules for the employment of family members to ensure that business operations are conducted effectively and are aligned with best practices.