Explain This Passage

[Pippin]

No: HPFGUIDX 180658

> Allie:
> 
> I wonder what Harry and Ginny's children would be considered.  
> Harry, being "half-blood," and Ginny being "pureblood," would that 
> make them 3/4 bloods?  :)  For how many generations must one's 
> parents be magical before one is considered pureblood? 

Pippin Fowler:

Again, the choices are:
pureblood: both parents are pureblood
halfblood: one parent is pureblood, one parent is not pureblood
neither: no parent is pureblood

Harry and Ginny would have halfblood children, because one parent is 
pureblood and one parent is not.

The focus (prejudices and 'racial purity' discussions aside), from a 
breeding standpoint, is on tracking the pureblood line. Ask your 
neighbourhood livestock breeder.

Pippin Fowler