Dominantly Inherited Disorders

On page 267 in our text, they discuss the form of dwarfism called achondroplasia. It is Dominate Inherited Disorder. But the reason less than 1% of the human have it is because the recessive allele is more prevalent in the human species.
Just because an allele is dominate over the recessive allele doesn't mean that more people carry the dominate allele.
Hope this helps.
Mrs. Stebly