I *think* when you breed Naked Necks it goes as such:
Naked Neck (homozygous) x standard feathered-neck chicken = 100% heterozygous Naked Necks (bowties)
Naked Neck w/bowties (heterozygous) x Naked Neck w/bowties (heterozygous) = 25% standard feathered neck, 25% Naked Neck (homozygous), 50% Naked Neck w/bowties (heterozygous)
Naked Neck (homozygous) x Naked Neck (homozygous) = 100% Naked Neck (homozygous)
Naked Neck (homozygous) x Naked Neck w/bowties (heterozygous) = 50% Naked Neck w/bowties (heterozygous), 50% Naked Neck (homozygous)
Naked Neck w/bowties (heterozygous) x standard necked chicken = 50% Naked Neck w/bowties (heterozygous), 50% standard necked
Anyone feel free to correct me if I'm wrong (I just did a few mental punnett squares), but I believe there are many possible ways of turning out non-naked chicks from naked parents