Are you asking how Cute Charm affects the genders of wild Pokemon if the gender ratio for said Pokemon is uneven? If so, then the answer is that when a Pokemon with Cute Charm is leading the party, wild Pokemon have a 66.7% chance of being the opposite gender, regardless of the gender ratio of the species unless the species has a set gender (like Kangaskahn or Sawk) that is the same gender of the Cute Charm Pokemon being used.
You might need to better explain what exactly it is you're asking, but I think that whatever it is can be read about here.
