[HPforGrownups] Squib/Muggleborn theory

[Rowena Grunnion-Ffitch]

No: HPFGUIDX 26714


--- catherine at cator-manor.demon.co.uk wrote:
> In fact, couldn't all muggle born
> wizards/witches have 
> originally come from magical families, but are
> actually born from 
> squibs/descendents of squibs.  Is this genetically
> possible?  It 
> would explain why magical children suddenly appear
> in a long line of 
> non-magical ancestors.

      This is possible genetically if 'magic' is a
recessive gene requiring one from both parents to
express itself. If this was the case however
half-bloods would almost always be Muggles which does
not seem to be the case or intermarriage with Muggles
would have destroyed rather than preserved the
Wizarding race.
    I think 'magic' is controlled by a single dominate
gene which always expresses itself when present.
Muggle born wizards and witches are the result of a
spontaneous mutation.

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