Does my mom have any right to not tell me who my biological dad is?

Generally a DNA test would be a way to determine who a biological parent is. It may be difficult for one to use the law in order to find out this information. In regard to parental claim, In Missouri a minor can become emancipated from a parent or legal guardian in one of three ways: 1. Your parents give their express consent to the court to terminate their parental rights; 2. Your parents give their implied consent by permitting you to live on your own, support yourself, and have already effectively given up their parental rights; or 3. You have married or enlisted in the military. Emancipation is typically not available to minors under the age of sixteen. As a practical matter. Communication of information by, in, to or through this Web site and your receipt or use of it (1) is not provided in the course of and does not create or constitute an attorney-client relationship, (2) is not intended as a solicitation, (3) is not intended to convey or constitute legal advice, and (4) is not a substitute for obtaining legal advice from a qualified attorney. You should not act upon any such information without first seeking qualified professional counsel on your specific matter. The hiring of an attorney is an important decision that should not be based solely upon Web site communications or advertisements.

Your step father has no parental rights. Your mother is free to tell or not tell you who your father is. Since presumably he is not on your birth certificate and therefore not legally your father, she had no obligation to inform him of your birth. She may be ready to tell you when you are an adult. It has nothing to do with your step father.