Wizarding genetics

[hp_fan_2008]

No: HPFGUIDX 180701

catlady:
<SNIP>
> Listies used to suggest that the wizarding folk had a baby boom
> after the first defeat of LV. A wizarding baby boom without a
> simultaneous wizarding death boom will result in an unusually
> large number of Squibs, another result that the DEs didn't want.
> But it's only superstition that makes the wizarding folk think
> that Squibs are more likely than any other mm to have Squib
> children.

falkeli:
I find it hard to believe that there were only 40 wizard/witch
deaths during September 1979 - August 1980. Many of the students
in Harry's year do have wizard/witch ancestry - so there doesn't
seem to have been a big muggle-born batch that year. In addition,
this theory predicts that 3 years below Harry (Dennis Creevey's
year) there shouldn't be any muggle-borns, as this would have been
when the babies of the baby boom would be born.