system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Are witches or a wizards really just a mutant?

How can 2 muggles have a witch or wizard as a child?  Can a witch and wizard have a non-magical child?
gpt
Wizards and witches have non-mugical children occasionally. Mr Filch, the janitor of Hogwarts is an example. Since most wizarding families are quite ignorant of smuggle science, and don't want to lower themselves to using it, no one has mapped the magic user gene. While a muggle born witch like Hermione may be a mutatation, it is more likely both her parents had a wizard ancestor than tel he same mutation would happen so frequently.