You can’t say for definite that it’s the case. The miracle of Jesus’ birth is pretty strongly associated with the word miracle. When deciding on the English translation, they didn’t have to use the word miracle at all, doing so can only be a deliberate choice on their part. There’s not been mention of a mother, no consideration from zoraal that he might have after her rather than his father. Not to mention that the rules for racial inheritance we know about are that it’s broadly matrilineal with slight if any features from the father. This would necessitate at the least a hoobigo somewhere that’s his mother. Parthenogenesis saves the bother of inventing this new npc because we know one of the heads is a hoobigo.

It does raise the question of why he didn’t have a second child after proving he could do it once though, even if it was through the standard method.