Genetics and Wizarding Ablilty; was Wizard Contraception

[nlpnt at yahoo.com]

No: HPFGUIDX 397

--- In HPforGrownups at egroups.com, "Merriman Vicki" <VMerriman at f...> 
wrote:
> Now interestingly enough, Colin Creevy's brother started at 
Hogwarts 
> in GoF, and yet Colin is muggle born.  Their muggle parents have 
> produced two wizards.  So perhaps there are people who are just shy 
> of wizarding folk, and when they happen to get married they have a 
> higher tendancy to produce muggle born wizards.
> 
It's fairly standard in fantasy/scifi settings for unusual abilities 
to be something like genetically dominant; the offspring of a wizard 
and a Muggle is nearly always a wizard; the same is true of Jedi 
in "Star Wars" and , IIRC, Anne McCaffrey's Talents.
 In all the above cases, the question is raised; if the abilities are 
genetically dominant, why isn't the majority of the population 
magical/ Force-enabled/ Talented?