Genetics in the wizarding world. Is wizarding a genetic or recessive trait?

[bookworm857158367]

No: HPFGUIDX 100467

> It's magic, the exact opposite of science. Why are we trying to 
use 
> the laws of science to quantify it? How do we even know that it's 
> genes that determine this stuff for wizards seeing how the wizards 
> are capable of violating quite a few laws of physics. I mean how 
do 
> you know that it isn't the soul that determines if they're going 
to 
> have magical powers or not?
> 
> It's not physics, it's metaphysics.- Joss Whedon

Actually, I don't believe that argument. I think the magic they do 
probably CAN be explained by science, just as everything can, but 
it's a science that we can't understand. There are rules to what 
they do. The kids spend years studying it. Some animals see a 
greater spectrum of color than humans are able to, based on the 
structure of their eyes. There's probably something about the 
physical structure of a wizard or witch that makes them able to see 
and do things normal humans can't. It probably impacts their above-
average healing ability, longer life span, maybe even their ability 
to eat endless amounts of sugary snacks. Think of how many calories 
they must burn when they do magic! I think everything can be 
explained by the laws of nature. To paraphrase someone I've 
forgotten -- there are greater things on heaven and Earth than are 
dreamt of in our philosophy.

Since they can breed with normal humans, presumably their bodies 
don't work too differently than ours, so magical genes must be 
inherited much as everything else human is.