Auditor

director is a deemed officer in company, so a relative of officer should not be a auditor of that company

As per Section 141 (3)(f):
a person's relative is a director or is in the employment of the company as a director or key managerial personnel, such person cannot be appointed as statutory auditor.

here the term "director" stands for ordinary directors.
Generally even if an independent director satisfies the criteria of independence specified in section 149 (6), he is also a director. Hence a CA, son of an independent director, is disqualified.