pathfinder – What happens when we conceive a polymorphous child in another species?

I can not imagine that this is addressed explicitlybut I wonder:

Is there anything in the Pathfinder rules or in the Golarion tradition that suggests what happens when a polymorphous person in another species conceives a child? for example. if a human being turns into an elf and then conceives a child with an elf, does the elf mother give birth to an elf or half-elf?