Squibs have genes to do magic?

[finwitch]

No: HPFGUIDX 146378

Jazmyn:
> JK knows NOTHING about genetics.  You can not have 'mudbloods' if its a 
> dominant gene.  Its got to be a recessive gene if you can have two 
> muggles produce a wizard.  Genetics was my area in college, so I know 
> what I am talking about here. 
-- 
> JK's idea simply does not work.  If Wizard genes were always dominant, 
> there would be NO squibs born to purebred families.

Finwitch:

Squibs, however, are rare - and much more so than Muggleborns. I
thought it may be a mutation which just happened in reproducive cells.
Most likely in the male's. And that it's recessive (explaining how
Muggles can produce wizards).

On the other hand, it *could* be that instead of a single gene, magic
comes out of a combination of genes. After all, some are stronger in
magic than others. (Compare Dumbledore and Lockhart).

It even may be that it's not about genetics at all. Magic has its own
rules, you know. Consider, for instance, that Parselmouth-ability
appears hereditary (Gaunts&Riddle&Slytherin) but Harry gained it
trough Voldemort's 'marking him as his equal'.

Finwitch