See what you thinks about this:
1. If person P is fully human in the biological sense, then P possesses human DNA from both a human female and a human male.
2. If P did not acquire human DNA from a human male, then P does not possess human DNA from a human male.
3. Jesus had no biological human father. [Christian assumption]
4. Therefore, Jesus did not acquire human DNA from a human male. (from 3)
5. Therefore, Jesus does not possess human DNA from a human male. (from 4, 2)
6. Therefore, Jesus was not fully human in the biological sense. (from 5, 1).