system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] When Harry Potter characters use polyjuice potion to become a different gender, will a female to male transformation allow the new male to impregnate a woman?


When Harry Potter characters use polyjuice potion to become a different gender, will a female to male transformation allow the new male to impregnate a woman?

It seems silly but this is a serious question I was wondering while watching HP.
gpt
No. Let's say that Hermione, after turning into Harry in book 7, seduced Ginny for some reason. Even if she were producing sperm cells during the transformation, and even if one successfully reached one of Ginny's eggs, the magic would wear off and the very young fetus would suffer spontaneous existence failure. Even if Hermione continued to take potions after the fact, the sperm cells wouldn't be affected once they left her body.

Likewise, an alternate scenario (I dunno, some creepy kid turning into Ginny to try to have Harry's baby) would play out the same way. It takes time to ovulate that a single dose of the Polyjuice Potion doesn't give you - and the umbilical cord doesn't carry the potion with it, so prolonging the experience with potions doesn't matter because the material used to create any fetus in the first place would collapse back into sperm cells (from Harry) and other material (more sperm cells?) from the potion taker.