The verb "resemble" is a transitive verb, which means it is followed directly by its object without any preposition. Therefore, "resembles his father" is the grammatically correct structure.

১. Using "like", "with", or "similar to" after "resemble" is a common redundancy error in English.
২. The word "resemble" already carries the meaning of "looking like" or "being similar to".
৩. In formal English, transitive verbs do not require prepositions to connect with their objects.

অতিরিক্ত তথ্য: However, the noun "resemblance" takes the preposition "to" or "between" (e.g., He has a resemblance to his father).