title: A genetic explanation for no sex difference in spatial ability among Eskimos.
abstract: Superior spatial ability may be inherited as an X-linked recessive trait. Since the sex ratio for an X-linked recessive trait depends on the gene frequency of the recessive allele, the absence of a sex difference in Eskimo spatial ability may reflect an unusually high frequency of the recessive allele in the Eskimo population.
mesh_terms: D005260:Female; D005808:Genes, Recessive; D005838:Genotype; D006801:Humans; D004930:Inuit; D008297:Male; D012737:Sex Factors; D013028:Space Perception; D014960:X Chromosome